I know I have seen this before, I've even used it on my server, but ive been looking for a good hour and cant seem to find it anywhere! It is a plugin which allows you to open chests regardless if there is a block above the chest. I know I have seen this before and i know it exists, I just cant. If anyone has a link or a name or will remake it please let me know! Thanks. ~Triple
Could be http://dev.bukkit.org/server-mods/openinv/ . Specifically the Openinv.anychest permission let's you open blocked chests.
TripleXPenguin Just make sure this isn't letting them open chests you have protected with any world protection plugins you use... The forum thread isn't clear on whether or not this is the case.