Student Summer Job

Hello to all,
I'm a French college student who used to live in Chicago and I'm looking for a summer job for July-August 2018. I am searching for a job as a nanny/babysitter, waitress, cashier anything that is possible. If you have any contacts please let me know. I have worked with kids before, and in the fast food industry so I have experience with direct sale and clients.

Also if you know a little bit about a working visas for 2 months let me know also.
Thank you.