I'm taking a guess as to which is the best board for this craft. I made lucky charms for all my kids' classmates for St. Patrick's Day!
It starts like this:
We have tons of white clover growing where I live and I have a knack for spotting 4 leaf clovers. This pile was from a single day of harvesting. I found over 34 four leaf clovers in one pleasant evening outside.
I pressed them in my much loved copy of the CRC Handbook of Chemistry and Physics (the thickest, heaviest book I own). I slipped the clovers into penny sleeves (like for trading cards) and taped the penny sleeve to the printed card. I designed the cards in PowerPoint ('cause I'm a nerd).