$12256 / $11500
HumbleBundle has a bundle of several RPG assets from GameDevMarket for $20 or less right now. I know they aren't open/free, but there may be something useful for your projects in there. I'm particularly interested in the SFX packs included.
https://www.humblebundle.com/software/rpg-game-dev-bundle
This website's content is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
For those interested, the license terms are explained here (https://www.gamedevmarket.net/terms-conditions/#pro-licence).
Briefly, it lets you use the included assets, and/or any derivatives you create, from any asset pack in 1 non-monetized, OR 1 monetized project. Since the bundle contains many asset packs, you are allowed to use one pack in one project, and another pack in another project. But you cannot use one pack in multiple projects, without purchasing an additional license for each project.