I generally was quite bad in alot of ways... due to curiousity.
My favorite toys were not dolls, but lego, and transformers. I loved the idea of making something complex from many smaller parts, and my designs were always amazing.. I hated the crap they sold in boxes because the stuff they made never looked as good as mine >.>
And transformers I could just switch back and forth and back and forth like 50 times in a row, they were amusing that way XD
But yeah... when I was very young I got a sega genesis, since I'd been playing on an atari anyway before that. So lots of gaming in there too from a young age.
There's also things like capricorn said, of being able to fix things easily; I could even program the VCR XD Thing is, this only occurs if I wasn't bored; if I was interested in something, I could focus intently on fixing a problem, however... I was also very difficult to focus attention on things.
Was diagnosed with ADHD (attention deficit hyperactivity disorder... I'm not sure if it's even real, but whotever people wanted to use as an excuse to explain my behaviour); problem has never truly gone away, but I've found ways to deal with it. I find my mind wanders way too easily, and my attention span is nil; the easiest way to keep me paying attention, is to divide my attention, as odd as that sounds. As long as I'm doing "other" stuff, I don't tend to wander off in my mind nearly as much. Soooo for example, if I'm trying to do homework or something, play music, tap my feets to it, have tv on, keep adding things until I'm not actively trying to find something to distract me. When I have enough things going on at once, I can just ignore everything else, and the act of ignoring them seems to help. If I were alone in a silent room while trying to do a single task, I'd have my mind wandering aimlessly and it'd be impossible to focus; give me a dozen things going on around me, and it's easy.
In terms of respecting others' property, however, that was something I actually learned very quickly. Thing was lego... having that knocked over or damaged or destroied... eh... I would spend hours and hours perfecting a design, then if it was damaged I'd be sooooooo pissed about it... so I quickly came to the conclusion that breaking other peoples' stuff is bad, since I flat out hated it myself.
Which... brings me to another point. At a younger age, I was also quite violent

Little control on my emotions... I never enjoyed acting on such, since I knew, even at the time, I'd feel guilty afterwards.
This has led to interesting dichotomies...
If someone pisses me off to great extent, I have no respect for their property, and will do horrible things to it. It wouldn't be the first time I've damaged a car, refrigerator, window, or other expensive item because I felt it was suitable payback for someone being an ass. The biggest problem, is that it'll be plotted ahead to look like an accident, and yeu won't be able to tell WHY it broke, yeu'll just go "oh crap it broke down ;_; "
It's a cruel thing to do, but cause distress to me and yeu'll find it returned quite equally and then some for good measure.
Overall, yeur kid will probably have alot of creativity bottled up. This's good and bad, because it means yeu'll have someone who's creative, but when they can't hold onto it anymore, it will come out in some pretty terrible ways. I shall forego the incident involving a minor forest fire and myself due to my belief that fire was pretty. Don't let this happen :O
Get them lego or k'nex or something to preoccupy them as much as possible. Yeu want to give them many outlets for their creativity, or they'll find "new and interesting" ways involving the dishes being used to make a card house out of. Keep one step ahead of them or yeu shall regret it XD
Oh and the biggest thing... respect is important. Immensely so. Yeu don't get freebie respect by being their parent... yeu have to earn it, same as everyone else. Yeu may be given more leniency and gain it faster, but yeu can't just assume that because yeu're the parent, yeu get automatic respect. "respect yeur elders" is a quote that just pisses me off, and I"m sure they feel the same; yeu respect who has earned it. Not just who has happened to be an ass longer.
EXPLAIN things; if yeu say "don't do this" and give no reason... yeu've pretty much just 100% guaranteed that they'll do it out of spite. If yeu simply give an explanation and say WHY not to do so, it's almost guaranteed they'll listen.
And about the worst thing yeu could concievably do is punish them and not say why. The whole "Go to yeur room and think about whot yeu've done, and I won't tell yeu whot it is because yeu KNOW whot yeu did wrong" is usually totally false... because half the time, they didn't realize it was wrong at all, and the other half they're wondering which of the 10 things they know they did wrong yeu caught onto and will feign ignorance on all of them. Don't bother trying to bait them into saying whot they did wrong and hoping to lure extra information out of them; they're too crafty for it. It's a waste of everyone's time, and they'll be infuriated yeu tried, and yeu WILL pay for the attempt, one way or another. And yeu'll never have the evidence to prove they broke the clothes dryer in retribution.
Treat them with respect, and explain yeurself, and don't treat them for a fool, and yeu'll get along much better.
Oh.
And don't leave any child psychology books laying around. If they think it's talking about them, they'll read it cover to cover, understand it, and use it against yeu. My parents made the mistake of having one of these out in the open. Don't make the same mistake.
EDIT: OH CRAP I JUST REMEMBERED!
DO NOT UNDER ANY CIRCUMSTANCES LEAVE THEM ALONE WITH AN EMPTY 2L POP BOTTLE AND THE CONTENTS OF THE SPICE RACK!
Also, do not ask why I know this, just accept personal experience has taught me this was a very bad idea, though it seemed like a good one at the time.