Ring of success

After reading that someone had made a pétanque circle from an Ikea shower mat, I thought I'd have a go at my own.  I couldn't find any rubber mats cheap enough, so I used 6mm thick (double corrugated) cardboard instead.  Lindsay suggested I use gaffa tape to protect the ring from the rain and make it stand out.  Here's the result...

It works fine, doesn't blow away in the wind and can be folded.  I might make more of these, using different colours and designs.