Stairs

Collin has been able to go up the stairs for a while now, but would usually get to the top and then cry for someone to come up and bring him down so he could climb up again.  Last weekend, though, he mastered coming down the stairs.  So, he will now climb all the way to the second floor, make a mess and/or grab something he wants, and then scoot back down on his bottom.  He really is unstoppable now!