probably cheaper than bed risers and more adjustable- I would LOVE for my sewing table to be a few inches taller! MRL thinks this is brilliant if it really works! Make a folding table taller (to use as a buffet or work table) with pvc pipe!
Screw PVC pipe under your workbench Store bar and pipe clamps right under your workbench where they'll always be close at hand. Just screw sections of PVC pipe under your workbench and slide the clamps into the pipe.