Staking contract for erc20 tokens - getting started

Hiya. Been learning solidity for about a week, been playing around on the devnet launching random stuff I find online and making little changes to see what happens. Next thing on my list of "things to understand" is staking.

Was wondering if anyone had a reliable staking contract I could play around with? Or, where to find a standard one?

Thanks!!

Do you want to elaborate what you mean by staking? Sometimes this term means different things.