The issue with weight lifting (OP here) is that it's a rather rigid plane of motion. Athletic, dynamic, multi-step lifts aren't involved. Weight lifting as it is should be once a week, and the other six should be something else.
Here is my list of alternatives:
>Sledgehammer/ Long heavy metal object;
<principle of disadvantageous lever and shock absorption.
>Heavy chain ( huge links ) as nonchaku;
<360 degree joint strength, build toughness from getting hit, seriously difficult… I haven't done it.
>Pinch, fatt, finger tip grip versions of exercises;
<for some reason this engages the entire damn body no matter what it is.
>Throwing club ( heavy );
<elastic speedy strength. If you can throw a 5 lb club 60m you can kill a man with a punch, chop, palm or throw
>Weighted clothing;
<"oooh you'll become slow and ineffective", you'll have to try harder to move faster until you build up basic all around strength. It takes focus to move faster whilst heavier, which you will develop unless you aren't even trying anymore. The benefit is mostly from how depressed you might become from weighted clothing… overcoming that depression is how you will grow from it. If you hurt, you hurt because your posture, tension pattern/intensity and muscle engagement pattern is shitty.
>Gymnastics;
<you should know these are good by now.