if we want to raise funds it is easier to do it officialy. no law enforcers can stop us when we have proper papers. we need to join or create an funding assosiaciation first. after getting proper licenses form munucipilaty we can sell stuff for donations. 7 members are enough to create one.
i have some stuff selling ideas to raise some funds.(i am also planning to build an educational fund assos. in the future working with other assosiacitons.) Paper dough is made from used paper mixed with white glue and flour. You can do anything from these papers. (recycling) Old newspapers, papers in the bins etc. that ll be our main material. We can make some small statues, we can create new papers and paint them with food paints and arrange them with dried flowers to sell some certificates. we can even create furnitares, guitars or other stuff polishing them with wood paint to reduce their decays. we can create small trees from paper dough with tree or flower seeds bottom of them and when you plant these you can have a real plants.
One day we can all get together make hundreds of kites and organize a kiting festival and we can sell the spare kites.
Also origami is a good way to raise funds, unlimited shapes spray painted very low costs but we can get good returns.
Donations are not very hard to get we just need a cause to believe in and have some ideas to pull people in it.

just check origami,recycling paper doughs, making kites from google
a good and fun way to start