We used to use blocks of styrofoam back in the 90s : r/Fishing

Middleboro Trailer Sales - These solid styrofoam blocks are 19”x12

Vintage 1990 New Kids on the Block NKOTB 3-hole Punched File

Styrofoam compactor helps recycle styrofoam fish boxes to keep

Small Boats Are Big Fun For Anglers - Colorado Outdoors Online

Dirty styrofoam boxes with ice blocks for keeping the fish catch

We Depend on Plastic. Now We're Drowning in It.

Styrofoam fish boxes hi-res stock photography and images - Alamy

How does Styrofoam compactor bring convenience to the fishing industry

Recycled Styrofoam Block Insulation : 4 Steps - Instructables

My Wild, Wet, and (Sometimes) Miserable Paddling Trip Through the

Source, fate and management of recreational fishing marine debris