I have three work tables/benches, none of which I made, but all of which I modified. Steel top bench bought at action for $35.00, which also included a vise. Removed the legs and placed on a steel laboratory cabinet ($5.00 at auction). Picked up for free a metal legged pedestal table with large Formica top that serves as table saw outfeed table and primary glue up table. Picked up at auction ($5.00) a large all steel General Fireproofing tanker table that I replaced the rotting vinyl top with sheet of 1/4" steel plate ($30), now serves as a generic work surface and welding table.
My countertops are maple veneered solid core doors that were once sliding closet doors. The countertops sit on low rise lateral file cabinets. Total cost for about 16' of countertop and cabinets was, I believe, $18.
I did make a "table" out of scrap lumber for the miter saw.
I find it just as fun to repurpose and reuse than build new. Takes some innovation.