Home Depot sells warped, split, and twisted lumber at 70% off, and the frugal carpenter sees that flawed lumber as having potential. Cutting these sticks into shorter pieces can yield shelving reinforcement, trailer jack pads, and custom jack stands.
The basic 2×6 jack stand is cube shaped, very difficult to tip over but takes up valuable space if ya need to do work nearby.
The tall pyramid jack stand comes in handy when ya need space to maneuver, but not as stable as the cube...it can be tipped over, but not easily.
The short pyramid is a good general purpose lumber jack stand...difficult to tip over, gives more room to work than the cube.
I recall figuring that each of these lumber jack stands cost less than 2 bucks in materials when I built them during lockdown.