There are some xpm/xbm tiles included in the current (2.5.2) CDE source code on https://sourceforge.net/projects/cdesktopenv/. The NsCDE list is nice!

This worked for me for a couple of communities that were stuck in the ‘pending’ state.

There’s a lot of extra but it’s not necessarily filler. It would all depend on whether you were going to run your game in the Aventuria world and/or wanted the Theater Knights campaign. It depends on how much of the published stuff you want to run.