Hi,
I have a couple of recipes for you....
PLAYDOUGH:
Ingredients:
1 cup plain flour
1 cup water
1/2 cup cooking salt
1 tablesppon cooking oil
Food colouring of your choice
With a wooden spoon, mix flour, water and salt in a saucepan over a medium heat until think. When it has cooled, add the oil and knead well on a well floured board.
Divide the dough in equal portions to the amount of coloured dough you want (ie, if you want blue, red and yellow, divide 3... if you want more colours then just divide as required). Alternatively, if you want plain dough then just leave out the food colouring. Then just knead the dough again until the colour is mixed through. Store in an seperate containers until required.
EDIBLE PLAYDOUGH:
(Please note: This recipe contains peanuts so should not be used for children who suffer from allergies to nuts!)
Ingredients:
Peanut paste
Milk powder
Sugar
Food colouring of your choice
Mix one part peanut paste to one part milk powder, and half a part of sugar. Double or triple quantities depending on how much you want. Add some food colouring if desired.
GOOP:
Ingredients:
- Cornflour
- Food colouring
- Water
Tip cornflour into a bowl, add a few drop[s of food colouring and a little water , until it is the desired consistency.
Spread a plastic tablecloth over a table outside (very messy!) and tip the goop out. Children love drawing, playing and feeling the goop.
When the goop starts drying out, simply add a little more water to make it runny again.
When your child/children have finished playing, spoon the goop into a plastic container with a lid and store it away. The goop will dry out but can be restored to its gooey consistenct by simply adding some water.
I found these recipes in the book '365 TV-Free Activities for Toddlers' by Di Hodges.
Word of warning though... when my son did these the food colouring tended to stain his hands so he had hands like a smurf for a day or two!! 
