When it comes to donation, I think you know that Bitcoin and Ethereum will be the most suitable coin to be used because they are still the most popular coin in the market and with large volume, so they can easily trade it anywhere, and also, people will understand bitcoin and Ethereum better when being giving as donation.

I have also donated lots of crypto no matter how little, and even if where I want to pull out the money from is from some of these altcoin wallet, I still make sure that I assist the company in changing it to either Ethereum or bitcoin if I cannot give cash, but if I can give cash, I just change it to cash directly because I know that majority of them would still need to change it to cash also when they have gotten the crypto.