this post is more for developers but anyone can use really. I created a burn smart contract for SNIP-20s and a UI for people to use:
Why it was made: We needed a place to send Buttcoin to take out of circulation. Because SNIP-20 tokens are private, we wanted a contract where we could send any coin and anyone could query the contract to see what the balance is. The viewing key is also public for this contract so anyone can view the transaction history.
Instructions are on the page.
Let me know if you have any questions and code can be found here: