I recently made the boys a “loft/fort” out of old flannel sheets that is familiar to this. I used cotton twine to hang the sheets on (instead of the poles in this pic) and used ceiling hooks to secure line. I also hung sheets on the bottom bunk too.
RH baby&child's Cole Canvas Tent:This sturdy canvas covering is specially designed to drape over the A-shaped frame of our Cole Framed House Bed. Detailed with a paned window at one end of the bed and generously sized built-in storage pockets at the other