Which hand is dominant for you? Do you tend to use one hand for certain things, but the other hand for other things? How about your dominant eye or foot or other part of your body--as in, do you tend to use one side over the other?
As for me, I'm left-handed, but I use my right hand for many things that some lefties tend to still use their left. I would say my left hand is more coordinated, but my right hand is stronger.
I use my left hand for writing, drawing, cutting, washing, brushing my teeth, throwing, using untinsels, and most other things that require coordination or skill.
However, I use my right hand for using a mouse; I cannot use a mouse well with my left hand. I've noticed I mark my place with my right hand (rather than left) when reading--you know, dragging your finger down with the line of text one's on? I also tend to use my right hand when I'm multi-tasking, such as using a calculator while writing, drinking while eating or writing, shaving while washing, etc.
Some things I have to do the same way as a right-handed person would, and if I try doing it differently (i.e. using a "left-handed" version, if there even is one), I'm horrible with it--like playing video games, using a camera, playing an instrument, using a mouse, turning pages, etc. (Yeah, most of those things are done with two hands, anyway.)
Other things I do ambidexrously; I use whichever hand is free or closer, whichever is more convenient. Eating, drinking, using a remote/calculator/CD player/other device that involves pushing buttons without "skill", and turning on switches are some examples. Sometimes I do things where I switch hands I use to make the task easier, like painting my nails, brushing/blow drying my hair, or putting on mascara (haha, all girly tasks XD).
Other tendencies:
- I hold the phone with my left hand to my left ear
- When using one eye to look at things, I use my left one
- I hold things in my right hand or my left arm, but usually not the other way around
- I usually carry my purse on my right shoulder, but sometimes I switch
- I can raise my left brow while lowering my right one, but not the other way around
- My right hand is better at cracking its knuckles than my left (when I don't use the help of the other hand)
- I kick with my left foot
- I wink with either eye ;)
I like the way game controllers are designed: directional control with the left hand (free-coordination?), pushing buttons with the right (more strength, controlled-coordination?).