Slacker mom needs nursery ideas

Bianca • Mom of two girls with a baby boy on the way to even the score. Due 10/27.
Okay with 28 days to go I am admitting to myself that it's probably time to give the nursery some attention.  (I think my nesting phase just kicked in.  Had to stop myself from getting up at 12:30 at night to put away baby clothes.) 
We have been trying to figure out how the heck to decorate a room shared by a toddler girl and an infant boy.  Another complication - it's an attic room so two of the walls are sloped.  There's really only one wall high enough for the crib.
Any ideas for a neutral but cute nursery design? Run into anything on Pinterest for boy and girl that you liked?  Help!!  My hub is threatening to decorate with Eagles gear if I don't come up with something.  😱  (He considers the Eagles to be perfect decor for a girl or a boy.  SMH AND GO RAVENS!!)