WIll bbl when I have time but we have made
stainglass window decs by cutting out shapes in the middle of sturdy card then the kids paste strips of cellophane over the gap
letter to Santa
pasting glitter on nice coloured paper then when dry cut out and use for cards or wrapping paper
might be a bit young for the 2 yr old but the 6yr old could push pins and sequins into polystyrine balls to make balls for the tree
cut out lots of green outline of hands to and use them to make a tree
hands can also be cut out in brown and become reindeer ears.

That's all I can think of for now!