magic line has 4". i also got a set of 2" 3" and 4" from somewhere, not sure where now though.
You might take a look at these
http://cgi.ebay.com/ROUND-CAKE-PAN-SET-MINI-2-3-4-5-x-2-deep-BONUS_W0QQitemZ330172813451QQihZ014QQcategoryZ25466QQcmdZViewItem
kinda cute
http://cakepans4less.com/round%20pans.html - This one has nearly any size you would want between 2 and 20
http://www.shopbakersnook.com/276.html?sm=43709 - This site has a 3, 4, and 5 inch
http://fantes.com/cake_pans_round.htm - This one has a set of mini pans you can buy, as well as ones you can buy separately
I have round pans that are 2,3,4,5,6 and up inches made by magic line.
And for squares the smallest I have found is 3x3, 4x4, and 5x5 I hvae seen these by magic line and fat daddios.
I found all these sizes recently at www.cakepans4less.com I did not buy my pans from them, but they have them.
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