Needlepoint Ket Fobs are really cool and while there are great kits including painted canvases out there, you might want to make your own.
Typically the fob hardware is about the width of a belt, but measure it to be sure. You’ll want to trace a rectangle on your canvas about 6″-8″ inches long and two threads more than this width. Here’s a link to a Google Shopping search for key fob hardware.
Once you have stitched your design, here’s how to finish it.
I haven’t done this yet myself. but here’s how you would do it.
Make the key fob needlepoint the correct width for your hardware and block if needed.
Trim canvas to five threads beyond the edges of the needlepoint and turn down the long sides.
Find a grosgrain ribbon or piece of ultrasuede (so it won’t ravel) the width of the stitched needlepoint. Sew it to the back of the fob along the edged, being sure to catch the turned under margins and catching a bit of the back of the stitching.
Fold the stitching into a loop and fit the fob hardware to the unstitched ends. If needed trim those ends so no unstitched canvas will show before attaching the fob hardware.