How small? Batting can be pieced using a fusible tape, stitched on the machine or whip stitched by hand..search for "how to join patting pieces" for different methods. Try this:
http://www.afewscraps.com/2013/12/my...ng-scraps.html
Some of these are hilarious!
https://www.tshirtquiltstx.com/blog/...ng-scraps.html