I created a table riser to level a folding “Lifetime” brand table from Costco with my dining room table for the holidays.  Very simple to use, just place under each foot.  If your floor isn't level, or you need more height, you can use the included shims to fine-tune.  Worked great!

This model is for a 1" riser before shims, but I will also upload a 0.5" riser.  I printed in black PLA, but you can use any color you want to blend in!