A bookshelf and table can be reconfigured into a double-sided work space with some DIY ingenuity. Saw the table in half and attach the table to the bookcase using L-brackets. The back of the bookshelf can be covered in cork-board, chalkboard paint, or pegboard to create a usable “wall”. Hang baskets on the side of the bookcase for storage.
Since the nursery is actually a nursery/guestroom/study, I'd really like to get rid of our current desk chair and replace it with something like this---it'd still be functional, but more kid-friendly than the ugly brown leather behemoth that's in there now.