Any examples of contract with infinite term staking pool type token X for token X?

You know the PancakeSwap syrup pool, or many others, where fixed reward's generated on block basis? It's finite, so you can predict amount of total distribution.

What I'm looking for: is infinite term pool, where I will periodically and chaotically add token X, and users who stake the same token X can get the rewards.

Please share contract addresses of this type of pools if you recall it.

Without recharging pool will produce rewards for 365 days, for example.