It is a thing made out of cloth. One is filled with sand, beans, something...and sits on your sewing table and the other end is a bag that hangs off the end of the table. The 'hanging off end' seems to have boning in it that holds it open. It is used to collect the threads ends and small fabric pieces as you sew.
I've seen this used and would like to buy or make one...but don't know the name of it. So far I just hang a plastic bag and shut one side up in a drawer and use that for my sewing trash.
Anyone know the name of this? It looks like it might be easy to make.