What is the best option to provide for people who are homeless in the cold?

It's going to be very cold over the next few days in my area and I'd like to buy something for the people who are homeless, particularly ones who won't be in a shelter.

For budgeting, there is one shelter in my area for adults and one for children/teenagers. I don't know how many people would not have shelter but in the past, I have planned for 40 people when providing food for people in a shelter.

My budget is about $200 USD; what would be the most useful? thermal blankets? hot food?

Edit: thanks to all who responded. I called the shelter and the most needed items are (1) sleeping bags (2) very warm gloves to prevent frostbite (3) boots