Anyone else use found objects for outdoor bodyweight workouts?

As someone who loves doing bodyweight fitness outdoors year-round, I've been following the Recommended Routine (RR) pretty consistently for the past few months. One thing I learned was the importance of hinging movements and adding weight for leg exercises. To stay true to my goal of working out outside with minimal equipment, I've started using random objects I find at my local park for added weight. There's a chunk of concrete weighing about 30 lbs and a larger stone around 80 lbs that I'm working up to. I'm curious if anyone else into bodyweight fitness uses found objects from their surroundings? Whether it's in an urban area or out in nature? I've grown to really enjoy lifting stones and other objects, but it can be awkward sometimes. Any tips or things to watch out for with this approach? I'm thinking about finding some easier-to-grip stones, weighing them, and painting the weights on them to leave at my workout spot. The other day, another regular at the park asked if he could use 'my' concrete block - I had to laugh and tell him the decaying infrastructure wasn't mine to lend out! Anyone else have experience with this type of outdoor, found-object bodyweight training?