I was briefly able to get to https://archive.org/donate - I’m going to kick them a few bucks and recommend anyone else who can afford to also do so.
There’s also this, copied verbatim from the site:
Other ways to donate
Mail your donation to: Internet Archive C/O Philanthropy Department 300 Funston Avenue San Francisco, CA 94118-2116
In order to ensure you receive an acknowledgement of your gift as quickly as possible, please include an email address with your mailed donation.
We regret that we cannot accept cash or check donations in currencies other than USD.
Stock or Wire Transfer: If you would like to make a stock or wire transfer gift, please contact us at donations@archive.org
I say we go full Streisand effect on whatever dickhead is trying to censor them.