I happen to have both cutting machines so I love to use those any chance I can now. So I created a 3″ circle template on my Cricut and cut out 12 circles. Before I cut the circles I did have to cut my poster board in to smaller sheets to fit in the machine, then just used it like a cardstock in the Cricut machine.
Once my circles were all cut I simply added a couple holes with my hole punch. Then I grabbed a piece of white chalk and simply just rubbed the white chalk all over the front of the black circle. Try to just hold the edges of the circle so you don’t rub off the chalk. I took a paper towel and very lightly dusted off the excess chalk dust.
String the chalkboard circles on some jute twine, then write your message with a chalkboard marker. You could use regular chalk too, it’s up to you.