I've been taking a wood working class at a local community college.

Learning some very neat stuff including lots of uses for double sided
1/4" Melamine.

Can be used as protective pads during glue-ups.

Add some double back tape and you have temporary zero clearance backer
blocks for all kind of table saw sleds as well as router fence
applications.

Due to low cost, there is an incentive to look for more applications
as well as discarding used pieces frequently.

Lew