If you tend to spend a whole lot of time soaking yourself in a tub until your fingers and toes turn all wrinkly like prunes, then the Underwater Light Show is the perfect gadget to own.

There are five lighting effects in all, from a fast random color changing light show that’s all very Night Fever, through a flashing single color, slow seductive phasing through all four colors, constant single color and finally a sequence of all the effects back to back. It looks a little bit like the rose off a watering can, but is of course considerably more fun, and deeply funky.

At £7.95 a pop, it is definitely affordable although I’d suggest you stock up on rechargeable batteries as the trio of AAA batteries won’t last for too many baths in succession IMHO.