It is all Yo Gabba Gabba all the time in our household. We watch the show, have a Plex shirt, Toodee shoes, finger puppets, bath toys, etc. Gabba madness!
My husband and I were curious if our child is old enough to start playing memory games, so I whipped up some YGG flashcards to use for a homemade memory game.
There are 7 total cards to be flipped down when playing, they can be found here and here. The back side of those cards is the group photo which can be found here. Just print the individual sheets twice and the group photo sheet 4 times and glue a group photo to the back of each individual photo. They will print on standard 8.5x11 paper and are sized 3" x 4" each. You can also laminate them if you'd like!