Okay here's how you start a mutual aid project. This is the last time I'm going to explain it:

Ask a houseless person what they need

Bring the stuff they ask for

Thats how you get started

Theres way more to it, eventually but you literally just say

Get boss is there any supplies in particular you need? Maybe after handing them a coke, 5 bucks or a meal.

They will say something like

I need cigarettes, socks and a some money for medication

You dont have to fill the whole list

Next time you see them hand it over and just be honest

I did the best I could sorry i couldn't get everything on the list

Repeat