PT-P700 Tape Catcher

The Brother PT-P700 label maker cuts off a small piece at the beginning of every label (printer design reasons). This piece, along with the label itself, drops onto the desk, scattering around. So I designed:
A shell that sits around the label maker, onto which I can hook a shell for the catcher.
The catcher itself is a removable tray so that I can easily tip the rubbish into the bin.
I then created a separate box that sits on the side of that and hooks onto the catcher shell, so that I have somewhere to put my labels between printing them and taking them to the item to be labeled.