I'm on Mastodon.world. It has been excellent, and the admin team even created some stats pages to show uptime. It's pretty stellar, in my humble opinion.
The first is a bit of a mashup, mixing the proverbial light bulbs that go off in community threads and has a lemmy with full cheeks (probably after eating... a little too much!). Also, it looks like an ice cream cone. It's a bit more pop-art.
Only the finest content will do: the second one has a bit more of a 'fine dining' aesthetic, where users engage online in a sophisticated, gentle-lemmy manner. Its nose is tipped upwards, as if looking down on lesser memes.
The third one is more attached to your sought-after design. I attempted to channel the similar Fediverse art style, while keeping it simple enough for an app logo.
My home server is a Ubuntu install on a 2017 laptop. A lot of guides have been very useful.
I installed several other tools, with Portainer, for a variety of imaged applications. With various containers I installed Jellyfin (for hosting old videos and converted media of mine), Calibre (for a digital library of textbooks from my history degree) and a few other tools. I've been half-tempted to host some WordPress sites, but I have yet to figure out nginx...
Anyways, it was a poor decision, which harmed the natural regrowth of grasses in Africa. And probably contributed to drought and poor soil conditions there. Sadly, he has been regarded as an expert and heralded as an environmentalist par excellance. So, less of a stupid prize for him than a poor prize for humanity writ-large.
I go through Patreon, as I also contribute to a local news site and to the Mastodon developer team (... and so I can snoop in their Discord, which is Patreon only). I believe there is a preference for OpenCollective as a platform of choice.
For the original effort on Mastodon, the Little Big Planet vibe was indeed an inspiration. The 'hand made' aesthetic is a really neat way to share that a place is being created and made by its users, and having it be a tangible, almost print or paper product, I felt it touched that key cultural element of both Lemmy and the work of the fediverse/activitypub.
... but, I do offer another series of suggestions:
Hubertos, the patron saint of hunters. In addition to linkages to a cure for rabies, he is the patron of hunters, which has fit with the lemmings and critters that we share online.
Muroidea is the name for the superfamily of rodents, which you can read more about here.
Artemis is another series of manned space flights from NASA.
Ulysses is another example. Add in it being a name of a mythological explorer, and it adds another layer.
Mushak: Ganesh, from the Hindu pantheon, rides a mouse. This mouse's name is Mushak according to some sects. As a divine mount, there's some fun pieces of lore and how this app is how Lemmy users can ride into knowledge of the world around them.
I'm on Mastodon.world. It has been excellent, and the admin team even created some stats pages to show uptime. It's pretty stellar, in my humble opinion.