My two twin boys are pretty into Fireman Sam these days, so the red walking car they got when they were babies got an upgrade. Four blue self-flashing LEDs, a toggle switch and a 2xAA battery holder; everything bought cheap on eBay. And voila! A fire truck with blue emergency lights.

My nephew, and my twin boys, both have a Ikea play kitchen. It’s a pretty cool toy, with a microwave, oven, sink, cabinets and hot plates. The plates have LEDs so they turn red when turned on, just to make it a bit more real. But the play kitchen is even greater with some lights!