Can these guys get much cuter! I think NOT! I have seen some awesome samples done with these guys and you can check them out here at Whimsy Stamps. Great for all occasions, and perfect for bringing a smile to someones face for sure! Doesn’t even have to be a birthday. 
Yeti Birthday clear stamps
Yeti Birthday outline dies
Copics:
BG0000 B000 B00
C1 C3 C5
R11 W3
E41 E42 E43
V12 V15 V17
Adorable! Thanks for sharing.