I love Full House although I haven't watched it for quite a long time.
Off the top of my head I know there were several Barbies in the episode where Stephinie went to the Honey Bees Mother Daughter slumber party with Joey and DJ had a Pillow Person in a few episodes. I think there was also a few seconds of Thundercats or something when the the family sat down to watch Danny's show. "Wake Up, San Francisco!" when Michelle grabbed the remote and turned off the tape.
I thought of a few more but I'll give other people a chance.
Ponyfan