I wouldn't attempt to sew vinyl. Every time the needle goes through vinyl it would create a hole leaving the seam weak and liable to tear. What I would do is glue with a glue for vinyl. I'd glue a strip of cardboard to the edge of the vinyl, fold it over a few times and glue again and then punch holes in the top and attach shower curtain hooks to be threaded on a rod.

Better yet --Buy shower curtains at the dollar store. I buy mine there for $2. They are quite servicable and come in quite a few colors. If you don't like them plain the decorate them with glued on ribbon

As the school music teacher, last year I inherited a cabinet whose doors had fallen off and the wood was stripped. That meant the doors could not be put back on. Since there's a Sunday School class that meets in my room, I wanted to keep them out of that cabinet, so here's what I did:

I bought a cafe curtain rod of the correct size at Home Depot, and nailed it carefully to the cabinet top front. Then I made some long cotton curtains (music print, of course) to hang from that rod. It's worked to keep people out of my supply cabinet.

Another challenge I had was to keep those same people out of my large xylophones and metallophones. So I made covers out of $2/yard fabric. That has another plus: it keeps the dust off!

Donna