According to one source, babies develop an "urge to sort" at around 9 months. Disappointingly, I haven't yet caught Carson neatly arranging his stuffed animals by size and color. It seems that Carson's development is progressing in the opposite direction. He suffers from frequent urges to un-sort.
Ahh, mommy's craft supplies. He pulled that entire drawer out. And yes, I sat there and allowed him to do all of this. It was too cute to stop him... and I thoroughly enjoyed 20 very quiet minutes.