If you can only afford one stake - this is the one to buy. It is versatile and can be used for many things.
This is the standard combination flat T Stake 11” long by 1-1/2” wide. It has a 1-1/4” shank tapering to 1” that fits the T-stake holder. It is made of 4140 steel, same material used for hammer heads and high-end anvils.