Things Livy used to do:
pump her fists when she stretched her arms above her head
coo like a pigeon (agoo was a popular word)
gag like she was choking when we fed her milk
scream during tummy time
take every opportunity to watch the t.v.

Things Livy does now:
squats while standing, using mom or dad to balance her and provide the slightest lift
yells and squeels to express herself
screams during tummy time
takes every opportunity to watch the t.v. (which we try very hard to keep her from doing)