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So I like for my demo equipment to look as much like new as possible. When I demo (Hololens or otherwise) I always take electronic wipes to clean off any oils, lens cloths to keep everything clean, clear and as smudge-free as possible.
One thing though, can't just be "wiped clean" - and that's the inner headband. The velvety soft fabric is an oil and sweat magnet - and the idea of demoing somewhere like VRLA, or even at a less intense venue like this coming weekend's Hololens Enthusiasts Meetup, seems like a recipe for coming away with a dirty-looking headset.
Anyone have a good solution? I can easily imagine making a velcro "sanitary cover" that wraps around the front and back, attaching in a few places, but this is almost like something I'd want to buy a disposable box of by the hundred, not hand-make by the dozen.