"Your Academic Rival"

Rocks-Off gives "Your Academic Rival" a two year guarantee, which is long cover for something at this price. The body is silicone over ABS, both body-safe, in a golden rose finish that reads more like a lipstick than a toy if it's sitting in a bedside drawer.

If it's been a while, or if what you've used before was borrowed or bought in a hurry, this is an easy way back. At 22 grams and nine centimetres you can hold it in place for as long as you like without your wrist complaining. Sixteen settings, one button, no menu to learn.

It takes about seventy minutes to charge and runs for about forty-five, so treat it as something you top up between uses rather than leave in the drawer. Rocks-Off doesn't give it a waterproof rating, so it isn't one for the shower.