1) We wouldn't be able to have these large enough to decorate and still fit our board.
2) Making these fit a contained space AND join together was a heck of a trick!
To solve both issues, I quit pulling my hair out, and instead I paid $3 on Teachers Pay Teachers for a pre-formed puzzle. I also took the time to laminate it so I can use it again (they weren't fun to cut out). As far as decorating them goes, I switched up my get-to-know-you for the first day, and instead I had students take a selfie on their new iPads to be printed for a puzzle piece. I'm waiting to collect and print them, though, until I have all parent permission slips back.
What are some fun bulletin boards you've seen?