oh, thats fine, it did sound as if you might be looking for additions to a book or something, as most parents give details on ages/interests etc
as its for a charity craft stall I can pass on a few ideas which have been tried & tested & successful at fetes I've been involved in
- Mask decorating - you buy blank white masks - Economy of Brighton have the cheapest I know of - the kids decorate them with poster paints & glitter and adult is on hand with a glue gun to help add a couple of coloured feathers, bigger sequins etc etc ( you can get these from Economy cheaply too - let them know you are a charity for a discount
)
If budget is an issue, you can do the same sort of thing but using white paper plates - with added elastic thread & cut out holes for eyes.
paper flower making - tissue paper & those green sticks for gardening - which you can pick up in garden centres or pound shops if you are lucky
biscuit decorating - get parents etc to donate plain home made ginger biscuits - give out a tried & tested recipe & as for cut shapes if possible - you'll get a mix that way - provide runny white icing, cake toppings such as mini jelly sweets, sprinkles, glitter, chocolate stars etc etc - Morissons or Azda have these at good prices - - you can also include colured icing (though best with natural colours) - use ols bun trays as paletes to keep the colours seperate - let the kids loose with paint bushes to paint on icing & drop their chosen decorations on - as you can imagine this one is VERY popular.
pomander making - provide each DC with an orange, - then have bowls of cloves for them to poke into the orange in their chosen pattern, provide ribbons, sequin trims etc to finish off & make hanging loops :)
hope that helps a bit :)