Hi! I'm Denperidge, and this is where I store any resources I find for those looking to make some LGBTQIA2S+ designs, but also are broke.
Oh, note that I'm not a lawyer, not of this is legal advice. That being said, here's some advice that may look like legal advice:
The original designer (who seems like a pretty cool person!) has very lenient usage terms written down, which - for non-commercial usage - *tend* to summarize to "hey tag me because I want to like your stuff". And there's even a contact for commercial usage! Read the terms here and get the assets here.
Every image - if I'm correct - on Wikipedia has a Wikimedia entry, and thus has a license written down. This license can tell you if it's public domain, or what other license it has. This is how I found out about Daniel Quasar, go figure!
Need some vectors? Need some clipart? Publicdomainvectors.org has public domain ones! No intrusive advertising or anything, just some nice art.
Here's a link to the example above!
Sites like Unsplash and Pexels host a bunch of high-quality images, all allowed to be used in non-commercial and commercial purposes, simply asking for giving credit if/wherever possible! Of course (generally speaking, check the websites licensing) you can't outright sell the images on their own or use them to make a competitor to the website, but I'm assuming you weren't going to do that. Visit Unsplash here and/or Pexels here!