There's a project called Con or Bust that provides financial aid to "fans of color who want to attend SFF conventions, principally WisCon" (to quote the Intro statement).
They raise money via a LiveJournal-based fundraising auction. Which ends tonight! I'm sorry not to have mentioned it sooner.
There are many cool things being auctioned. I want to point particularly to the items from the WisCon guests of honor:
Nnedi is offering two copies of The Shadow Speaker with author doodles. (Two separate items; top two bidders each get one.)
There are a bunch of other things and services in the auction: February list, March list. Books; handmade jewelry and clothing; food items; a custom website built for you; an original musical composition based on your prompt; DVDs; magazine subscriptions; art (including commissioned art of your choice); poetry; manga; custom-written fanfic; bunches of other stuff. Go check it out!