The next thing I needed was a simple bed pillow. Now you get the idea.
Since this was to be given to my DH (after all, it was his shirt!), I cut off the sleeves, sewed up the sides, and placed a cover inside the collar so the pillow would not show.
Voila! A pillowcase to go with his (UFO) crazy quilt. The shirt cooperated, having a ribbed bottom which helped enclose the pillow within.
Did I throw away the sleeves! Definitely not! I now have some more fabric to use in his quilt!