A whole bunch of free quality textures for your art needs...
https://gumroad.com/juliosillet

99 sound effects for free...
https://99sounds.org/free-sound-effects/

Truckloads of free goodies. https://soundimage.org/

Not a freebie, but a heck of a deal if this is the kind of thing you are looking for...
https://www.humblebundle.com/software/art-assets-music-and-sound-effects-software

Make excellent progress on my procedural spaceship creator (written in Godot.) I even did a local export to HTML and it was playing nice. Not ready for prime time yet, but this is my favorite way of learning a language by making something.

A huge SFX sampler with a very generous EULA (royalty free even for commercial use.)
https://www.pmsfx.com/sampler

For those that are curious, you can get Gwent for free from GOG and then accidentally hit the abort button and skip the 2 gig download. GOG still recognizes that you own the game that way.

The Witcher offer is only valid if you have GWENT, of which I have zero interest.

The muse is still on vacation so I decided to double down on the learning of tools. Currently taking a course on Godot which is a quality free open source game engine for 2d and 3d game creation.

One Man' Symphony continues to grow their collection of royalty free songs...
https://onemansymphony.bandcamp.com/releases