This wasp nest pot was made back in 2015 out of recycled corrugated cardboard, glue, and varnish. It's 19cm high.
I resorted to gluing dry pieces of cardboard together*. As the place I was renting at the time was far to damp for any "paper mache" technique to dry. Even in summer months, I found PVA, water and soaked cardboard took an eternity to dry.
*THIS was a slow technique. So I needed to find a much faster way of doing things.