Have you considered applying for the FLOSS/FUND?

[Sachin-Bhat]

There is this: https://floss.fund/blog/announcing-floss-fund/

They are giving away 10-100K per project (no strings attached)

Do apply: https://dir.floss.fund/submit

The project just needs to have a funding.json manifest.

[clefebvre]

Thanks @Sachin-Bhat, we only accept money through donations https://www.linuxmint.com/donors.php or sponsorships: https://linuxmint.com/sponsors_info.php