One inch a must have
To me, this is a must have. I can do so many things with a circle punch. I can use it for a monogram on a card, embellish it into a flower, or even hide a corner I have layered and made a small mistake on.
When I have small scraps of cardstock leftover, I punch this size circle right away and keep them all in a little plastic tray. I always have a stockpile of them. Fiskars is a name I can trust.