How can you reuse plastic file holders, the kind you store manilla files in ?
All I can think of is what they were for. Maybe sorting family photos, sketches, greeting cards...
Reuse them as files again or something else?
I am not sure what they are but if they are what I think, I use the plastic to make patterns. It is thin enough to cut easily yet stiff enough to hold its shape. I also use them to make flower tags when I am starting seeds.