wrote in message

Or for a small drawer, maybe bend the plastic to make front/bottom/back
in one piece and glue wooden sides on? The full joint size would be
large

Sounds like a lot of unnecessary effort to me when something much more
simple would suffice. Something as simple as two flathead screws fastening a
plastic window directly to the front edges of the drawer sides. There's
plenty of visually appealing screwhead types available that would make any
project like this look good.