I love doing craft with mine, we have a set of craft drawers like Mr Maker!
2 tips: get a plastic cloth for the table, do all craft on cloth. The Range sells clear plastic cloth for £2 m and it has right surface for playdough too.
Don't try and make things or direct the craft to make a specific and result, at this age it should be pretty open and free.
so, coloured paper or card as base A4 is fine, pva glue in squirty bottle (clean tip and close properly or you can't use it again. Let them squirt glue all over paper. then slap and stick bits of coloured paper, silver foil, sweet wrappers, cut out bits form old cards. near Christmas you can shake glitter over too. makes great picture to put on wall.
You can make great birthday cards this way too. fold A4 card in half, draw giant number 3 (or whatever) cut out (make sure it stands, and has hinge on fold of paper) then cover front in glue and stick bits of paper, hey presto card.
You can theme this, stick sand (bit messy), blue tissue paper and cut out some fish shapes from coloured paper = seaside.
playdough is good. Get rolling pin and a couple of cookie cutters (but don't be surprised if they just use hands at first. Make your own, look up no cook playdough and find the one made with teaspoon of cream of tartar and cup boiling water, best playdough ever, and never dries out, keep in fridge for months. I usually make double so we have great big dollop. great for friends round too.
paint is great. Get jamjars with lids, or buy plastic paint pots with lids. Buy bottles ready mix paint from asda, ELC. Buy fat brushes. Put inch of paint in each jar with its own brush, show dc how to return brush to right colour (so one brush per colour) they get it pretty quickly, colours stay pretty good, no wahsing of pots, just put on lids, then it is really easy to get it out and put away even if they paint for 5 mins. For paint get tescos big A3 pad, and any scrap paper you can (they go through a lot)
Don't forget a good apron, with sleeves if painting Have session where you paint hand and do hand prints. Actually pretty much every session ends with painting hands!
Put up a fishing line along one kitchen wall near ceiling, invest in some small pegs. hang artwork up on washing line. When you get to the end the first pisture comes down. Start a folder of favourites to keep, every 6 month sor so go through folder and cut it by half. Don't forget to put name and age (months and year) on back before you hang it.
Season pictures - collect leaves and glue, you can be clever and paint brown trunk then glue loads of leaves on. You can use washing up sponge and brown paint and sponge print brown paper then cut out vague tree shape, stick on another piece and stick leaves on randomly.
painty hand prints can be cut out and stuck down as Christmas tree
scissors. Get ones that work, and supervise to start, give dc old wrapping paper or thin greetings cards, let them randomly chop (don't try to cut out a shape) then stick down osme of the random chopped shapes. Mine were all on proper metal childrens blunt scissors by age 3.
can't think of any more....