Alligator clips instead of pins:  I used to use pins to hold my mohair fabric pieces together while I sewed.  Then I discovered alligator clips!  They are so much faster to use.  They don’t pucker my fabric like the pins did.  An added bonus is that they don’t put pin sized holes in my fabric!   I originally found them at Radio Shack.  I had to ask at the counter as they were not out on the shelves.  Recently I’ve been buying them online at eBay (link).   I prefer the type with teeth.