Good question. I have seen some but no kept a record of where I got them maybe embroideryrn.com
Helen
Almost forgot this one!
Jo
Here are a couple of other places too.
Oma's place has mini designs in pes. You can download free software to convert them to hus. The 2nd link has links to 2 conversion softwares near the bottom of the page.
Mary Jane's site is all about "mini" designs. You should be able to find something there. And Cookie has a few pages of minis, she also sells a gadget -Sockeasy-to help put them on the socks.
Jo