Show a button for sending quick donations to maintainers of bots, groups or channels using cryptocurrency. This could use either an established cryptocurrency like Bitcoin, Etherium, EOS, etc. – or some version of TON, like Free TON etc.
It would be ideal if cryptocurrency addons could be created by third-party developers and verified by Telegram developers, and then added for download to the official TG store. It would be less of a headache for the developers themselves.