Definitely an innovative adaptation of the more traditional tied-together sheets used for impromptu escapes.
And here's another piece of curious hardware...Casanova's dog tag! Curious and curiouser.
Bonnie of Pixel Dust Photo Art is hosting an exhibit of "minimalist" pictures in her virtual gallery this weekend that might pique your curiosity. I think the rusted dog tag qualifies, but if I want to get really hardcore with minimalism, I think I could do no better--or worse--than with this other strange feature found on the Carmel Casanova's wall...
Original on left
(don't ask me how!)
Possibly a peep hole?
We will never know.