If you want to last longer than a day in Grounded 2, you'll need to do a whole lot of building. While items like beds and workbenches are required to progress through the story, you can take things a step further by making cooking stations, entire basketball courts, or a leaf castle.
There are well over 100 construction recipes you can unlock throughout your playthrough, and more are arriving as it progresses through its Early Access phase and approaches version 1.0. Here's a complete list of construction recipes you can find in Grounded 2.
