Glitch materials are, in general, much larger than a 32 by 32 grid, but many are usable for a game like VX or Ace with a tileset of that size.
Even if you are only looking for some interesting textures, these materials are shared in a Creative Commons Universal License (very freewheeling.)
Many of the assets are in Flash format, but the first line which says
"All Spritesheets (flat images): ZIP (372MB)"
has image files anyone can open.
A small sample of the resources available:
