Love Letter. A very quick game with just 13 cards. Games take about 3 minutes so you can play multiple rounds if you want. Suits 2-6 players (best at max 4 in my experience). Generally very popular and easy to learn.
Comes in dozens of themes as well, if you don't like the "princess in a castle" theme. You can find Batman, Cuthulu, The Hobbit, versions depending on your preference.
OnShape is my go-to. It's what I taught my students when I was a TA for an introductory engineering class at college, and they could pick it up in about a day.
Can do just about anything a "professional" cad suite does, but it's free, works in a browser, and is generally so much better designed so you don't have to fight against the UI to get anything done.
You were into Warhammer at age 4? Man, I couldn't even read.
The way I picture this is by letting communities have some sort of "partner communities" listing. If mods of games@xyz decide they like the content of games@abc, and gaming@123, they add those communities as "partners" (perhaps those communities have to accept which in turn adds games@abc as their partner). Then, when any user subscribes to one partnered community, they also become subscribed by proxy to the others, and begin to see posts from all 3.
This helps smaller communities piggyback on the success of willing larger communities and gain a bit of visibility as well, which should encourage growth of each partner so smaller ones don't just die out.
Communities can "unpartner" at any time, in which case users would only remain subscribed to the one they originally selected. And of course, users could explicitly block any of the partnered communities if they don't want to see the whole set.
The theme is very minimal. I think the premise is "someone is trying to sneak a letter to the princess. Guess who has it? The guard? The maid? Etc." It's just a deduction game.
But there are also loads of "themed" versions if you prefer. Batman, Cthulhu, Munchkin, Santa Claus, Legend of the Five Rings, The Hobbit, Marvel, etc.
And since there are only 13 cards, you could easily re-theme it with a Deck of Many Things or something.
Others can correct me if I'm wrong, but PLA the plastic itself is food safe. As in, you can put it in your mouth and it's fine. The issue comes from the 3d printing process which tends to create small pockets and porous surfaces where microbes can hide and grow once it gets wet, kind of like a sponge. So you could print a single-use fork and eat with it, but don't reuse it later.
I think an insert for cutlery would be fine since you aren't going to be getting it wet or putting it in contact with your mouth or food.
Conversations with my spouse are almost entirely of the following:
I love her.
Ooh this is neat. Unfortunately my shelves aren't divided into cubes like a Kallax, but I do like the idea.
What about something like Aeon's End? Not racing on a map, but racing against a clock, because the big monster is going to destroy the world if you are too slow.
Awesome deck building, but an extreme sense of urgency.
I had some other games in mind, but honestly, none of them would have the longevity that Netrunner does. This is an excellent choice.
Are you looking for separate games to play in between roleplaying sessions, or games to play "inside" the roleplaying game?
One game that comes to mind is "Love Letter". A fun little card game that involves a little bit of deduction and bluffing but only takes about 4 minutes.
Defederation blocks communication both ways, I believe.