This is what I found my daughter doing this evening...
15 months old and lifting 16oz cans of beans from the top (aka hub lifting)! She's practically doing an upright row with them! And check out the left hand - not even using the index finger!
I think at this age kids do few things that stand out amongst other children their age. But this little girl lifts, and eats, (have you ever heard of a 1 year old that likes peppers and onions?) things that I doubt others her age are playing with. Last week I caught her walking around with a 2.5kg Ivanko collar, carrying it out in front of her with two hands on the tighten down bar.
I must confess, I started giving her a little pink 1lb dumbbell at 4 months old :) It was rubber coated and she seemed to like using it as a teething ring, and I admit to encouraging it :) Plus, I've got some theories about intellectual development being linked to hand strength & dexterity by way of neurological efficiency... but that is another post for another time.