Technology Will Save Us DIY speaker kit: Discover how you can turn a simple balloon or a painted cardboard box into a portable speaker and plug it into your smartphone or tablet to play your favourite tunes.
You will also need wire clippers, a soldering iron, 9V battery and around two hours of spare time. £26, johnlewis.com
ELECTRONIC LAB 101 KIT: This compact, portable electronic kit contains instructions and reusable components to make eight separate projects ranging from lighting an LED to building a biscuit jar alarm. Suitable for ages 14-plus. £23, notonthehighstreet.com