Bet you forgot about this one, haeh? The Advent Holomini Vocal Series? Let me remind you. You can get any of the following.
Cute pollow with Mococo or Fuwawa (or both) in a pose for you - $20 ea. or $40 for both
A Carabiner keychain with an acrylic picutre - $15 ea. or $30 for both
A small acrylic block figure with the same pose as the first two items - $7 ea. or $ 14 for both
A clear foler featuring all of Advent - $4
If you wanted to get all of them right now, it's only $88.00, and you can just tack it on to their birthday merch to avoid extra shipping cost. What are you waiting for, Wuffian?
https://shop.hololivepro.com/en/products/holomini_vocal_advent 