Not being able to currently, Westboard can usually be bought at The Range and Hobbycraft. Flitetest foamboard, well that currently really difficult to get, hopefully model shops will be getting supplies soonish!
Westfoam works fine for most builds with only a little change. Ebay should have some. It works well with Nerdnic’s chuck gliders, which are great to build with kids. The Chuck Cat fits on A3 3mm.
You won’t see any more stock or new stuff until later, many things in Europe are still closed and foamboard planes are only classed as essential here!
thats just wrong on so many levels
are we supposed to use washing machines to keep mentally challenged ?....... I have a hot glue gun ....... I need foam board