I have a prototype for this I did years ago but it needs to be updated and I would have no idea how to set it up for SMF.
But I really like Wiki new donation mod.
a bar in the header telling how much is donated and maybe how many
a donation page
and a list of donor's page
Treasury mod?
http://custom.simplemachines.org/mods/index.php?mod=916
hey i will check that out thanks!