There are five essential movements: Push (pushup), pull (pullup), squat, hip hinge (single leg deadlift), and weighted carry. If you can find some way to incorporate all of this into your training, then you'll have a totally balanced training routine.
Alternating squats+pushups with deadlifts+pullups and walking with a weighted backpack or vest will hit almost all of the bases with minimal time and equipment.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.