Hopefully this topic has discussion value o.O. Sorry for new account...for reasons I can't disclose I can't post under my normal alias...Anyways, I had a bunch of LEGOs (woot) as a kid, and I'm kind of tired of them just sitting in a box doing nothing. So, I've decided to make a huge project, but I can only make one of the following and I'm not sure which would be the most awesome. Help me decide? =D - An Engine: Yeah, it's been done many times before, but still, it'd be cool to have a working engine out of LEGOs. - A Plane: I kinda am leaning towards this, like, an actual flying plane somehow, but it would be cool. - A Helicopter: Eh, I'm more of a plane guy, because even if i did this, I'd have to figure out all the ratios for the parts so it wouldn't spin out of control, etc... - A Gun: This was the original idea I had in mind before my imagination went out of control. Not like a rubber band gun, but a equal-to-or-greater force like an airsoft. Semi-auto would be cool too. So OT, what sounds the coolest?