I am working on a mod project for a hybrid commuter. I am currently in search of a front shock that is as light as I can get for the given money (about $100). since I'm not sure if my project will even work, I don't want to spend a lot of money on the fork.

A used fork is good, if not preferable!
Light weight is prob the biggest factor here
Travel is no big concern since this is mostly a road hybrid.
also it doesn't have to be strong like a DH fork cuz I don't intend to abuse it!

any reccomendations?

My suggestions, forget suspension and get a rigid fork. Less weight, more efficient and lower cost.

+1 on this.
A good chromoly fork with good tires 32-38c and there should be no need for a shock up front.

Instead, if comfort is the focus, I'd put my money into something like this https://www.brookssaddles.com/en/Shop...ing&prod=Flyer and a good set of ergonomic grips such as these https://www.universalcycles.com/shopp...2&category=326 or these https://www.universalcycles.com/shopp...1&category=326

The main thing is that if properly set up, a "hybrid" should promote a slightly more upright riding position, which will shift your weight balance from your hands to your saddle.