I made one out of a fishing landing net. Cut the handle off and fitted it vertically in a block of wood, with lead poured into holes bored in the bottom of the block of wood for weight/stability. Set it up right beside the AR on the bench and all the brass caught smartly. Gathering dust now that I rid myself of the AR.

"You can lead a man to logic, but you cannot make him think." Joe Harz
"Always certain, often right." Keith McCafferty