I went to the Craft Fair last month.
This was one sheet of A4 cardstock I got in a mix and match box of Kanban,
Could decide how to use it then realised you can make a C6 Envelope out of the cardstock.
I used my Enveloper to make it.
The bit of 9cm wide card was enough to make a topper, the greeting was a Hero stamp too.
Must do this more often as I like things that match.