good day to you all!
I have a school project about boosting wireless signal but without touching the router and its antennas

1st of all we are not allowed to touch the router which means no windsurfers and parabolic near behind or front of it. but we are allowed too, if we give some distance between(perhaps 5 feet away).

2nd we are not allowed to touch the target destination, a laptop. which means no cantennas or ethernet cable.

3rd is the distance maybe 50 feet, a long hallway.it's like point A to point B to point c.

my 1st plan is to make reflectors that can reach my targets destination. the reflectors are made up of aluminum foils or tin cans[U](I think tin cans makes the range stronger)[/U but i don't know what right design to make.Perhaps a parabolic design or just a strait cardboard. what's best?

my 2nd plan is to make an antenna that picks up wifi signal and boost it. this antenna don't need to connect to the router but i think this is impossible to make.

but i think using reflectors is much easier.

- the router model is Linksys E2500 N600 Dual-Band(no antenna)
- there's only one ssid
- 1 wireless wifi which is the linksys. This is accessible for teachers only.

So what have you done / tried so far?

A lot has been written about wave propagation in the 40-50's and it holds today. Many of the pioneers of this field have made inventions and patents on this stuff. All of it depends on the frequencies used then look to solutions.
Not sure what the best search terms might be. Passive re-transmission maybe. Along with reflecting or simply using a parabolic or series of elements that can reflect.

not sure, but maybe searching for cantenna can give you some insights - some of the principles of building directional antennas might also apply to the transmitter.