Design Dilemma...Again

A while back, I wrote about the girls' playroom. I wanted to put some storage in there for toys and whatnot, but now I've decided that a bookcase probably isn't the best way to go. I'm thinking about soft-sided storage ottomans that can serve multiple purposes--seating for adults, storage for toys, and a soft item for the girls to pull up on when they get to that point (which will probably be very soon the way Dani is crawling up on pillows). I'd either go with a couple of cube ones or a larger trunk-like one.

Here's the room! Fun times, right?

So what do I need in this room to make it truly baby friendly? A gate is priority one. We have one, and it will hopefully be going up this week, as soon as a replacement part is delivered. Number two priority is something to cover the bottom of the piano. Dani has already attempted to lick the pedals, and I just can't have that. It has to be movable since I actually do play it. I'm leaning towards a decorative skirt. If I do the skirt on the piano, I'm thinking the floor pillows over there by the window will be in the same fabric.

Then there are the walls. This room is across from our dining room. Definitely not a formal setting, but it is a nice room, so I don't want the playroom to be so overtly childish that it looks weird across from our dining room. What would you do to decorate this room so that it's fun yet still nice enough to be the first room people see when they come over to your house? Do the soft ottomans sound like a good idea or would you just invest in more floor pillows for seating and just put the toys in a basket? Would you hang artwork on the walls? Or do some sort of removable vinyl sticker mural?

Help!