At Amazon right now you can grab a packet of five Philips Avent Microwave Steriliser bags for just £5 instead of the normal price of £10. These things are amazing - a relative bought me some when I was visiting with a new baby, and they're totally fab.
Each bag can be reused at least twenty times and it couldn't be easier to do so. You literally just chuck your baby's bottle in, and pop it in the microwave. Easy peasy!
I so agree with the reviews on this, too. Check this out:
"What a brilliant idea for sterilising on the move!! No need to lug a huge microwave sterilising unit around with you. We often forget the tongs from the main unit, but no problem as we have been able to use the bag to pull the teat securely through the collar and keep it sterile and found the bag can withstand so much. Brilliant product, would highly recommend you buy if you are travelling."
You can also get free delivery on this with Amazon Prime when buying this Add-on Item.
With thanks to gooner @HUKD.