Fixing smushed/bent foam glow wands?

Hi all, wanted to know if anyone had advice! I ordered a bunch of those foam glow wands, and they came in crushed. I'd have to pay for return shipping, and I'd rather just try and figure out how to salvage them. Does anyone know how I can return them to their shapes?


I've tried heating with a hair dryer and while it helped a bit, it didn't do much overall.