Sorry it's taken me so long to see this, thank you everybody for the great ideas.
I will get down to the local craft store when I can to see what material I can get my hands on.
Letank, thank you so much for the scans and dimensions. The product page on TGW has a very good template, so I will hopefully be able to apply your dimensions to that and scale accordingly. I really appreciate the effort!
When I give it a go I will report back here