Monster's Inc birthday party decorations outside party - Google Search
Monster Inc Invitation Monster Inc Photo by ThePrintableOccasion
Monsters Birthday Party Ideas
table décor... hard hats???
Monster's Inc. Mike Wazowski inspired First Birthday Boy Outfit - Bodysuit, Diaper Cover, Suspenders, Party Hat, Bow Tie, Tie - Cake Smash by Polkadotologie on Etsy https://www.etsy.com/listing/260310457/monsters-inc-mike-wazowski-inspired
Plastic monsters inc. and monsters university scaring assistant helmets/hats for birthday parties (set of 6) on Etsy, $26.00