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Cars aren’t the greenest of things so we’re always glad when we find something that we can use to save energy in them. This week’s Green Piece is all about the Sunsei 150 solar car battery charger. It will trickle charge a 12v car battery but can also be used in tractors, small boats, motorbikes and other small vehicles.

It’s ideal if you’re trying to use your car less or take it off the road but you’re worried that the battery will go flat. It will also save electricity if you need to charge your battery via a mains charger. And, of course, it will help all of us who don’t have that handy bleeping noise that alerts us to the fact that we’ve left our lights on when we get out of the car.

All in all, a pretty handy green gadget. You just mount the panel on the inside of your car window, using the suction cups and connect it to the cigarette lighter or directly to the battery with the crocodile clips provided.

You can pick one up here for £29.99 if you’re in the UK or here for $48.88 for US readers.

If you’re always getting lost, you may also want to invest in a sat nav - just think how much petrol you waste and how much CO₂ you emit when you’re correcting ‘navigation malfunctions’!

This week’s Green Piece sees three handy gadgets that will save you money on heating, electricity and batteries and will help the environment too.

First up is the wind-up remote control. It spells the end for those awkward sized batteries that nobody ever stocks and for that crucial moment when you go to use your remote and discover that the aforementioned batteries have run out.

According to WRAP, around 600 million UK household batteries (22,000 tonnes) – the equivalent weight of 110 Jumbo Jets – are sent to landfill unnecessarily every year, so this remote is definitely something to take seriously. It needs 30 ‘winds’ which will then last for seven days, which is pretty good going. It’s £24.95 but if you think about how many batteries you would go through, it’s not so bad.

The next product is something you can use in every room in your house to save you money on heating. It’s called a Radiator Booster and was once on Dragon’s Den. It sits on top of your radiators and takes all of the heat that gets released at the back of the radiator and uses clever fans to redirect it back into your room. It means that your house gets heated faster and that the heating can be switched off sooner.

At the moment, they’re £14.99 over at Nigel’s Eco Store and best of all, running costs are only about 30p a year.

Last is the waterproof torch that is charged up by shaking it. You shake it on down for 45 seconds and then you get five whole minutes of light…it does seem like a lot of work for five minutes but I guess it’s all part of the fun…and the energy saving, of course.

If you’re into science, the torch works with the help of a magnet. As you shake the torch, the magnet moves back and forth and generates an electric current. This current is then held in a holding cell so that you can still use the torch even if you haven’t wiggled it for a while. It’s a bargain at £5.99 and it has some good reviews too.

So there we have it, three great ways to help the environment and your wallets, especially useful now that energy costs are on the rise.

We’ve got some great products in this week’s Green Piece. The first one will save you money on your water and electricity and it will help to save the planet too. It’s a shower head with a difference. The Oxygenics BodySpa Water Saving Shower Head, as well as saving water, also works as a mini spa treatment in your own home. It uses a narrow channel in the shower head to squeeze all of the water out. This squeezing causes negative pressure which sucks air into the shower head. Then the air mixes with the water and creates a lovely invigorating shower.

You save on water because less is allowed through the narrow channel. You also don’t have to worry that you’ll have a rubbish shower because the air and the extra pressure makes it seem more powerful than your ordinary shower. Less water also means less heat to warm it up so you save on heating too. Bonus. There’s also no need to worry if you’re in a hard-water area as the inside of the shower head are made of high-tech, corrosion-resistant plastic with an extremely smooth surface that prevents the build-up of lime scale. Did they think of everything or what?

The only thing to note is that it won’t work with low pressure water systems e.g. Electric or Venturi Showers. If you’re up on your shower speak, you’ll need minimum water pressure of 20psi (that’s pound per square inch). You can pick one up for £39.95 from Green Warehouse.

The next handy device is called an Ecobutton and it attaches to your computer with a USB cable. Every time you have a break to make tea, pop to the loo or answer the phone, you just press the Ecobutton and it will power-down your computer for you.

According to the guys over at Nigel’s Eco Store, when your average computer goes on standby automatically, it’s programmed to use a ‘level 1’ standby which means that it still uses 50 per cent of the energy. Apparently the Ecobutton saves even more energy by using a ‘level 3’ standby. They estimate it’ll save you around £50 and 135kg of carbon a year.

Last but not least is the Eco Stapler. This is a stapler…without staples. This neat little device will perform some cutting and folding magic in the same time as it takes you to operate a normal stapler. Waste online  say that “If everyone in UK offices saved just one staple a day, we’d save 72 tonnes of metal a year”. Not bad for a £4.99 product. You can only staple three pages at a time, mind. So if you’re planning on producing a document that will easily take out a few trees, I’d suggest using a proper stapler or more importantly, ask yourself if you really need to use that much paper.

For those of you that find it difficult to remember to turn your TVs and other electrical items off at the switch, this could be the product for you.

According to the Energy Saving Trust, we waste around £37 a year by leaving appliances on standby. If we just look at all of the TVs left on standby in the UK every year, we waste a whopping £88m worth of energy and 480,000 tonnes of CO2. What makes it worse is that they also estimate that the average household has up to 12 gadgets left on standby or left charging at any one time. That’s a whole lot of waste!

So, if that hasn’t shocked you into making sure that all of your appliances are switched off properly, you might need to invest in the Bye Bye Standby kit. The starter pack comes with three plugs or ‘modules’ and one remote control. You just plug your appliances into the modules and then plug the modules into your plug sockets as normal.

You can give each appliance a code so that you can control them separately with the remote. You can now switch your appliances off wirelessly. Even if you forget to switch things off before you go to bed, the remote works from up to 30m away and through walls and ceilings so there’s no excuse!

The Bye Bye Standby Starter Kit is £19.94 at the moment on EcoHamster.