I know you can get it at Hobby Lobby, so I would think that Michael's had it also. Look near the art department. If you can't find it, ask someone.
our dollar store has them and Michaels has them in the aisle with project display boards, poster board etc...
I'm assuming you're in the wrong section....they have it at the Michael's near me at the end of a measly little cake decorating supply aisle. Just ask one of the workers...I know the one near me isn't well know for knowledgeable or helpful staff so just start asking about "thick posterboard"! lol
I use two 3/16". That ends up giving you a 3/8" board, which is a common ribbon size for putting ribbon around the board.
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