You can either buy them from a player, or get them from collecting all the useful keys, and opening the chest in Blackspore.
If you want keys on free realms, then you have to look for Rare Robgoblin junk piles..GOOD LUCK!!! XD
you get them from keys so btw the keys are in sactary:)
You need to get all the useful keys, which will give you the Blackspore Key, which opens the chest :P
Add them into the trade window.
there in robgoblin junk piles
You have to hold shift and use your arrow keys at the same time to slow walk in Free Realms.
rare robgoblin junk
collect robgoblin junkpiles and get keys
They are the items that help you open the treasure chests in free reams.
You need all the keys to that one collection. Some collections have 5 keys, or 8 keys.
To slow walk in free realms hit the shift key and then use the arrow keys to move. But yu have to keep hold on the shift key.