In addition to the minting and burning functionality, you can think of any useful feature to include in the token contract. The following contracts are some of the examples you can include in your token:

1. You can add a functionality to pause the token transfer for a certain period. Use a state variable for the status and modifier to include the restriction in the transfer function.
2. The total mintable value can be restricted with a cap. This will check for the token cap for each minting and will reject it if it exceeds the limit.
3. Tokens can be transferred with a time lock on them. This will restrict the receiver to using those tokens only after a set time period.