Have you all ever seen the pink insulated sheeting at Home Depot??? Its foam and I wondered if it could be used to make cake boards from? What do you think?

Insl.sheating 1/2 In. x 48 In. x 96 In.
Model 271020
$8.73/Piece

It might be sturdy enough, but not food safe. It would have to be covered with a foodsafe covering.

it's not all that sturdy either.

snaps rather easily