If your kids are like mine, they love Play-Doh. From Thursday 22nd September Aldi are selling single pots in-store (sold out online) for just 79p.
Normally you have to buy a whole set which is expensive, but if you get one or two pots then it's much cheaper.
This Play-Doh deal comes in six colours:
Just don't do what I did and tell your kids it's pretend food, and then they actually try to eat it!!
Play-Doh is really fun and not too much trouble to clean up