My idea would be to have a cassette radio or record player you have to go around the world to find the parts to craft it (side quest) with a side table craftable if (sitting in a chair) gets Implemented, I can imagine sitting in bases in our chairs listening to the music we find
Extra side quest would be finding cassette music or records for pacific bugs, these music tracks playing from your cassette radio or record player would attract certain bugs that get put in a trance, but to fully tame these bugs you would need to find a rare mushroom that spawns in the mushroom patches randomly and/or the infected goo for different types of bugs that you would want to tame, you can only tame one bug at a time, what ever special bug you tame could also unlock more side quests to go looking for parts to craft ride-ables or more special items for what ever you could use your pet for.
Also an idea to be able to bookmark a few crafting recipes to the HUD (CTRL + LMB click on a Recipe to bookmark to HUD) that shows the items you need for said crafting recipe, shows the amount you have in your inv and how many of said items you need
A few times I find myself going in and out of the menu because I forget what items I need for a crafting recipe, would be a nice thing to see while working on a few recipes at a time, especially if the game is going to get a lot larger in the crafting/building