You can donate to the general fund of Software in the Public Interest and let them figure out which of their projects (Debian is the most prominent one) needs the money most.
https://www.spi-inc.org/donations/
One advantage over Software Freedom Conservancy is that, if my memory serves, SFC criticized Richard Stallman and his appointment to the FSF board over the manufactured controversies of the last few years, SPI didn’t.
When have random people on the Internet ever cared about correct spelling and grammar? In any language? I’ve been an Internet regular for over 20 years and if anything, autocorrecting smartphones have improved the average quality of spelling.