CAP Adjustable Weighted Vest 20–150 lbs for Strength Training, Running & Workouts, Weight Vest for Men & Women, Fitness Training Vest

Get weighted or wighted adjustable wrist bands and use those. They will be close to your hands and will emulate whatever your hands are holding. https://yorkbarbell.com/product-tag/wrist-weights/ For leg work, this will still work for squats and such though you can probably stand 5kg there. if it is a little heavier one side vs. the other, it will be OK, just be careful and swap sides from workout to workout or between sets if you have the time. You could also get an adjustable weighted vest for legwork. Since only need a kg or so, you won't need to lug around too much extra weight, though wrists plus vest it will be noticeable. Get a sturdy gym bag maybe.