For play with item hidden avatars you'll need to have the carpenter if broken/be able to replace if broken.
INVENTORY / ATTIC / GALLERY:

Fizzy: Have 10 Cola Marapops in your attic and the view your attic.

Gallery: Have 32+ Newth items in your Gallery then go explore your gallery.

Going bananas: Have 501 banana items in your gallery.

Pretty: Have 25 Red Roses in your inventory.
PET/ PET ACTIONS

Beehive: Random while playing with beehive

Fat: Feed fast food to fat pet

Hacker: View profile digital pet with hacker job

Chocolate: Feed any chocolate to chocolate pet
MINIPET-RELATED:
Make plate:

Leon: Random

Snixie: Random

USB: Regular
Attach/view/etc:

Alen: Attach/deattach Alen to pet repeatedly. (May require a few times)

Baxter: view minipet ages 3+ days

Bruise: Deattach from injuried pet

Fatty: Attach and view 5 Fattys (red, pink, green, blue and yellow (original)

Fidge: Attach a pink fidge to pet

Poco: View minipet Millionaire pet