Just a reference for those who might want to see what the mirrors help you do; see below. You can certainly get a couple of cheap mirror to do the same thing & tape the 2 edges together, as someone here suggested. Plexiglass mirror is lightweight & won't shatter like real glass if you're carrying it around with you a lot.
I think if you bought a couple of variations of fabrics in the same line with same colorways, but a little different scale it could be a nice muted stack n whack (more subtle). I would audition the prints at a store where possible.
This one is $25, Marti Michell has one similar for $10 but smaller.
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