MAKO 3” Rebar Support Chair with Flat Base (Pack of 500) – Fits Bar Sizes 3-5 – Heavy Duty & Durable Plastic Concrete Rebar Stand Holder with Snap-in Mount (color may vary) - - Amazon.com
0.375-in x 10-ft Gray Steel #3 Rebar in the Rebar department at Lowes.com
USA Made - #3 Rebar Stakes J Hook Heavy Duty Steel Ground Anchors 12 i — onestopoutdoor.com