Leave them on top of the Sea Dogs' Tavern at K-12:
A Fun New Thing to do with Reaper Chests
A lot of legends like myself have been taking these chest here when we get bored. You see a lot of us don't need money or dabloomsso we take all the reaper chests and hide them up there. Then we scuttle our ships so curious greedy pirates come and investigate. When they arrive we use our pirate voices and tell them if they can best us in combat they can take the chest. We're not mean about it because it's all done with good fun in mind. I think Rare took wind of what we were doing and made it easier it get up there and made the chest glow kinda of. It's a fun new way to play and it kinda turns into a boss battle since you can't just respawn close. It all depends on the the server though sometimes no one comes and sometimes everyone comes at once and there is a big show down. It's all about being legendary!