Waitrose Ginger & Clementine Bath Foam
£1.50 in the Ocado order and you get masses of orangey bubbles. It's my bargain of the month. I add a few drops of essential oil and a more divine bubble bath you'd be hard to find. There are several other flavours too but I've not sampled them. Lime and Basil sounds good for Summer.
Note: I only ordered this when I had, literally run out of bubble bath. I am sort of sticking to my resolution.