Need Christmas Gift Ideas!

[Gasperini]

I'm trying to figure out how to get the younger people in my family educational, useful, exercise encouraging, and/or fun toys. I ruled out the 5 pounds of silly putty gift idea. (After all, what's the use if you aren't allowed to visit anymore?) I was looking at one of these, but they break the bank. (These things are actually pretty cool. My friend has one.) Right now, a whitewings brand paper airplane kit is in favor. These airplanes are made from multiple paper sections cut and glued together. They turn into highly accurate good looking airplanes. The whole idea would be to get my niece doing a delicate, technical crafts project followed by encouragement to get outdoors and fly the planes. Plus, it will hit her with a fun engineering-ish activity just while she's still open to the suggestion. You guys think that's something she would find interesting?

I've got four people who are difficult to buy for:
6 year old boy
11 Year old girl - this is the ecosystem/paper airplane one
13 year old girl (13 going on 24... &$%# MTV.)
17 year old boy (who's on these forums! shhh!) He's a senior right now.

I'm getting out of touch with you youngsters. What kind of stuff is 'hip' and 'cool' nowadays? (I always 'hated' when adults tried to use 'slang' by putting it in 'quotes.') I'm trying to avoid the dolls for girls sort of thing, and that's what is making this difficult. Anyways, I would appreciate some suggestions or feedback.