a couple of bag packing sessions ever year, (makes about £700)
a couple of quiz nights (makes about £500)
.....with obligatory raffles
plus gift aid.
That should raise about 3.5-4k pa.
I think its important to balance the effort vs money earned and also liklihood of getting any of the parents helping out. We just scrapped a big idea because we knew it would be the same old faces helping and very little revenue for the amount of organising and effort.