Sometimes letting your children get messy is the best thing you can do. Do you have an old duvet cover or bedding that is past its best that you can keep especially for the children to do messy paintings or crafts. Spread this over the floor beneath the table, another to cover the table and your,e all set. Old shirts worn back to front to protect their clothing and when it's all finished you can do a quick wash of these things in the machine ready for the next time. My children and now my grandchildren all had hours of fun with salt dough. This time of year they could be making little decorations for putting on the Christmas tree for nearer the time. If you Google Saltdough there are loads of ideas, alternatively your library will probably have books on this, starting with the simplest of things for children to advanced ideas for adults. It becomes quite compulsive and therapeutic once you start it. So cheap too. Bag of flour,salt, ( food colouring optional) or acrilic paints from hobby shops or pound shops and your away. You will probably enjoy doing it yourself as well ...so easy ...hours of fun. PS before painting these have to dry out ...either naturally or in a very low heat in the oven. Good luck, and lots of fun.