If the child is really young, check out the sugar desktop environment. There is an official distro from sugarlabs and there is also a fedora spin (fedora soas)
If the computer should be a little more functional, the GNOME desktop or the Deepin desktop are good options imo

Although the most active instance by far is pixelfed.social, that shouldn’t be relevant as you can interact with any pixelfed or mastodon account/posts no matter the server you join. So, you could join any pixelfed instance and follow the mastodon.art (most active multimedia instance) users, for example

@ursakhiin honestly, I didn’t even know an aws instance could be a docker image. Everything I did was creating the instance normally so I assumed it was just a regular vm. But already double checked and it is not a docker image, so no problem there 🙂

@ursakhiin honestly, didn’t consider it. Just checked and the “docker” command doesn’t even exist so I assume that is not the case. Do you know if the is any other way I can be certain?