From Reddit, comes this picture of the Toy-Con House virtual pet game. The Napeleon is from Nintendo's Hanafuda card game (this same item also has a cameo in Pikmin 2).
I have also spotted that the bird and sun poster on the left is also another hanafuda reference.
While the sticker customization sheet for Nintendo Labo has Nintendo character "eye" stickers.
Characters for each row appear to be: Mario, Peach, Goomba. Boo, Bowser, Toad. Random eyes, whites and pupils (or are they Pikmin eyes?). Isabelle, UNKNOWN (Lyle? Club KK Slider glasses), KK Slider. Splatoon Squid form, Toon Link, UNKNOWN. UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN.
Last Edit: Jan 17, 2018 23:47:31 GMT -5 by Da Robot