This modular, expanding workbench / workstation is made of 2x4's and plywood and doesn't take too much space is your garage ...

Fasten the frame rails (A) to the frame stiles (B) with glue and screws. Attach the fixed supports (C) to the interior face of the stiles. Rip the 1x3 to 2-in. wide on the table saw and crosscut ...