In this plugin, users can create chests with signs. The can create signchests by having [SIGNCHEST] as the header of a sign. Permissions for this plugin can be found here, and commands can be found here.

SignChests 0.3
Adds chests in minecraft.... That are in signs.....
Recent Updates
- Minecraft 8.1+ Compatability Jun 27, 2015
- Minature Update May 6, 2015
- SignChests v2.0 Tested Apr 26, 2015