Many sewing machine dealers can adapt their machines for disabled users. Try them first. Here's a mouth adaptation.
http://www.abledata.com/abledata.cfm...discontinued=0 Here is some general info (about three quarters of the way down the page)
http://www.freepatterns.com/content/...th=3&year=2007 and here's the info on the powerlink 3 adapter mentioned in the general site
http://assistivetech.sf.k12.sd.us/po...ntrol_unit.htm Also try your local disability rights organization. Best of luck to you.