Muti-purpose Strongman implements!
you can make them up to 170-180lbs of weight with just water
With sand and water up to 280-300 completely filled with both sand,& then filled with water.
You can carry them bear hug style, mixed grip holstered to the waist. Clean them and press them both staggered (way easier then parallel) and parallel grips. The stabilization it takes to press a keg is ridiculous. Pick them up and load them. If they are small or light throw them for distance.
You can essentially do the same things with kegs and then some. Depending on the sandbag's size and shape, you can shoulder it, or place it on your back and do lunges, throw it for distance, one arm press it, if its small enough.
Do abs, hyper extensions,dips, pull ups, body weight stuff,etc, with small sandbags draped around you as a weighted vest and the best thing is sand is cheap. Go to your local beach, or get 50lbs bags for less then 5$ at home depot. * WARNING there bags are crap so invest in a good one to put the sand in.
I mean there are way more, but these too are easiest to acquire and store, can be adjusted as you get stronger, and have many uses.
BTW Welcome Andrew Cook good to see other strongmen posting here! Good post.