Playroom ideas

Alright folks, we decided that in preparation for baby number 2 in November that we should turn our much wasted formal dining room into a playroom. This had many pros such as it being right off the living room, lots of space that could be utilized, and a safe confined area for exploration. But the room seems empty. Any toy, storage, play set up ideas for this room? Want to offer my boys a good, fun, learning environment that can grow with them. Keeping in mind our current child is only 14 months old.