How Do you build 2 machines that will work together to pick up aluminium bars ?

Question

We only have paper, pencils, up to two balloons, up to eight straws, 12 inches of tape, 12inches of wire, cardboard, small weights.

It weighs 43 grams

Answer 1

How heavy is the aluminum?

Answer 2

Just incase it helps.

You write upon two pieces of paper (using the pencils) something like:
"PLEASE HELP, COME PICK UP ALUMINIUM BARS SO I CAN PASS ENGINEERING TEST. WILL PROVIDE WITH NICE BALLOON AFTERWARDS"

Then fold each piece of paper into a nice paper airplane which you can fly over to people in the room.

I passed two tests in highschool with solutions like this (when I didn't really have a clue). And used the technique at uni too.

Well it was good enough for Kirk to get into the Star Fleet, by reprogramming the simulator before his final test.

*I apologise beforehand for this answer.