I just had to tell you all about my amazing idea for Christmas presents this year for all the grannies, friends etc.
I bought some poreclain paints (a small kit for £8) and went to a local shop that do white 'seconds' of china, and got lovely large 'latte mugs' - £1.99 each and voila!
My kids - 4 and 2 - had great fun painting mugs for all and sundry, they did splodges an pictures and names, really great fun. I then cooked them in the oven (you have to wait 24hrs to dry) and they are fantatsic, dishwasher proof presents. And Cheap!!
We went back and got a load of plates (£1.50) so they can do the same for their friends and cousins. Bargain!! They are so excited that they can give these as presents. That's us sorted for the next few years, until everyone has a full set
All I would say is one child per adult is handy so they use a new brush per colour and don't spill the paint.