1) Mix water with soap / detergent to get a solution suitable for blowing bubbles
2) Take two panes of transparent plastic, stick them together by placing 0.5cm high nails between them (like two panes seperated by 0.5cm with nails going through at certain spots)
3) Submerge the whole thing in the water/detergent solution
4) get it out, let the excess water drip away and you should get the shortest route between all the nails / dots drawn with a bubbly "wall / line"
^ practical use: draw a map of 10 or so major cities on a 1 foot* 1foot two-pane thing and you'll get the shortest route between the cities.
PS: you can thank me later, once you have the best fucking idea at the fair
@Jason Voorhees Wow, you're seriously one of the few here that actually have a brain.
You don't gotta be smart to write that. Not saying Alen is dumb.
Actually you gotta be lazy as fuck to write it that crappily, but the idea was good. And it was originally my idea too, though I did get inspired by a similar project. I let the friend have it though cause I wanted my project to be in math, she wanted physics