I bought a comforter set, I believe it was a Full/Queen, cut it in half, bound the cut side (my bound side is against the wall ). It had two shams with the set so now I have two comforters as well as a pillow sham for each bed. We also bought a memory foam mattress pad, cut that in half, and that makes the mattress so much more comfortable. We use the same comforter on our 2910--the 2910 is a custom job with twin beds!
We also use fleece blankets. I believe the size was 60x70. They are a little short but not too bad.
I thought about that but my sewing machine is broken. How did you bind the cut side? I like this idea. I might be able to find somebody to bind it for me. Blankets 60 inches wide sounds too big. My mattress is about 32 inches wide, that's 32 inches hanging over.