I think the concept of "Pay what you want." is a very friendly approach to this. It already exists on platforms like itch.io and some free to play games financed through donations, like Dwarf Fortress, also became extremely popular. Humble Bundles are also pretty famous for this. And of course kickstarters do something a bit similar to this.

Personally I'd love to see donation buttons/infos especially for all the free music and games that exist out there. But I want to make sure my donations reach the people who actually worked on it, so I dislike products like paypal or patreon where a portion of the money goes to men in the middle and their managers/owners, etc. A bank account number or something along those lines where I can transfer money a bit more directly would be nice, but some creators only provide paypal buttons, so I won't donate.