I saw that one and thought "Gosh, I bet that would be a really cool .sig, if I only knew what a 6502 was".
Tut tut, hand in your geek credentials on the way out.
The 6502 is not a bad CPU to learn things like programming on, since it's got a reasonably clean and orthogonal architecture, and isn't that far removed from some modern RISC designs (not really that surprising, since the people who designed the ARM had originally designed Acorn's PCs like the System 1, the Atom, the Electron and of course the BBC Micro, a of which are based on a 6502).
List of three things... hmm...
- How to ride (and maintain) a bicycle, after all this is a cycling forum, and cycling is a great aid to independence.
- As others have said, how to think critically and freely. A wild imagination can be useful for coming up with novel solutions, but that shouldn't stop you from being equally scathing of other peoples nonsense.
- How to speak another language. Learning a second language when you're young can aid learning others later in life, as well as being a useful end in it's own right (assuming you can use that language somewhere).
I'm not sure any list I come up with for girls would be different from the list I would come up with for boys. I don't think that (especially when you're young) there are many differences, and a lot of the differences between the males and females of our species are those which have been imposed upon us all, largely due to societal and cultural exposure, rather than any inbuilt need which we have to behave differently.