This post got me to looking in the basement last night through all my old line construction gear when I was a contractor for the telephone company.
These are stainless steel banding straps and they work like a regular Ty-Wrap (some call them zip ties). If you can get your hands on a few of these they might look good.
They're maybe a 1/4 inch wide, very thin, 304 stamped on them and have great holding strength.