Here are some fun and very challenging exercises for working out outdoors. They are full-body workouts. The crawling exercises are also core stabilizing. These exercises are challenging, but fun. In my opinion, more fun than going to the gym. Most of the exercises are bodyweight exercises, except for the last few which uses a 20lb sandbag.
The workout shown above is actually done about 1.5x slower than shown. The best results come when you control your movement rather than going too fast. As you can see, I had a bit of struggle with the inchworm. Breakdown of the workout:

#1. Burpee and broad jump

#2. The Gecko (or Alligator walk)

#3. The Inchworm

#4. The Chimp

#5. The Frog

#6. Jump and Kick

#7. Side side squats

#8.  Walking Lunges

#9. Crab walk

#10. Sandbag lift and press

#11. Sandbag drag (forward)

#12. Sandbag drag (sidewards)