Can a baby be trained to be right or left-handed?

One can train a baby or train oneself to perform an activity with opposite (non dominant) hand. You can train the baby to write with a specific hand, do normal chores like brushing, shaving, open door with a specific hand, etc.

Like the way, I trained myself to eat, shake-hand, serving food, religious rituals, etc with my right hand.

But, you cannot curb the natural instincts. In most cases, a left-handed (right-handed) baby/person would use its left (right) hand for a reflex or natural or untrained activity - like pick a pebble from ground, pick a fruit, cover nose while sneezing, etc. Or an action that needs strength like using spanner for unscrewing/screwing, etc.

p.s: This answer is from my experience as a left-handed. Not endorsed by any scientific theory.

If you're right-handed, what are some of the things that you do with your left hand, and if you're left-handed, what are some of the things you do with your right hand?

I am left-handed, left-eyed, left-footed. I prefer left by nature and by choice if there’s an option.

Below are few things I use right hand for, by habit/adaptation/lack of choice (mostly the last one):

• While eating with hand (Indian). Will use spoon with right hand in public and left-hand at home. Sometimes, at home, I snack with left-hand if I am alone.
• Using computer mouse at work
• Turning on/off ignition key in car daily
• Steering as my left-hand is mostly on gear shift (Right-side driving in India)
• Scissors, nail cutters, knives
• Hindu religious activities when obligated - rituals like pujas, lighting lamps, putting tilak/bindi, ringing bells in temples, taking prasad/harati (arti)
• Serving food at family events (avoid as much as I can)
• Using ATM
• Dialing on my office VOIP phone
• Buttoning/unbuttoning my shirts/jackets/trousers -yeah, you can do easily with single right hand, but not with single left hand. Try yourself!
• Locking/Unlocking paddle locks
• Open refrigerator door
• Biometric reader (fingerprint scanner) at my office turnstiles entry that reads only my right index finger.
• Clicking (pressing shutter button) on my SLR camera needs my right fingers (by design), though I use my left-eye for view-finder - my nose bumps and smears the LCD screen