If you'd like to make some extra money you might want to consider working as a brand ambassador. There are several different companies that hire people to do this. I only have experience working for one (Big Orange Productions) so that's the one I'll discuss today. But most of these companies are pretty similar so I'll go through the pros and cons of working for these types of companies.
Lack of contact with co-workers and supervisors. This could be a pro or a con depending on your attitude. I found them on a job site and applied. Later I was sent an e-mail telling me to sign up on their website and submit my ID, tax paperwork, etc. and that was pretty much it. There was no formal interview and so far I've never even spoken to anyone by phone. The way it works is you log into your account and search for events that are going to happen in your area. If you're willing to do them you can apply for each one and wait to see if you get approved. So far I've been approved for every event I've wanted to do. Each event has specific instructions and you're required to take several pictures of yourself at the event to upload to the site later. Then once your paperwork is approved they'll send out payment.
You don't get paid for 30 days. This is absolutely a con. They usually only take a few days to approve your paperwork but their policy is that they don't even mail your payment out for 30 days. I think that's absolutely ridiculous and probably hurts them a lot more than anymore. I mean, there are probably events they can't get booked because people don't have gas money to get to new events (most events don't reimburse you for gas).
Every event has different instructions. This is a con. It's not a huge problem but it's definitely annoying. Every event you do will have completely different instructions. This is understandable to a point because you're promoting different brands and different types of products. But one event will want you to check in and verify that you're there by calling a number and putting in your staff ID. Another time they'll want you to download an app onto your phone and use that to check in. (Which caused me some trouble when the event was in the middle of nowhere and I had no cell service.) Sometimes they'll send you a debit card and they want you to buy something on it to prove you're there. I'm not sure why that's necessary, especially when you already have to take several (usually 10-15 pictures of yourself at the event) and send them in. Shouldn't that be enough proof?
Work is extremely sporadic. Another con. If you're a college kid that just wants to make some extra money here and there this isn't a bad job choice but if you need a more steady income, I definitely don't recommend it, especially if you live in a more rural area. So far there hasn't been a single event in my town or even my county. I've had to travel at least an hour and at the longest an hour and a half (I refuse to travel further than that without reimbursement) for the closest events I could find. Ideally, you could work as much or as little as you want. But in reality, it depends on how many events they actually have in your area. I log in pretty often and see absolutely nothing.
There is very little supervision with this job. This is a pro. I like working with little to no supervision. As long as you follow the instructions they give you, you'll be fine. But I like not having a supervisor breathing down my neck looking over my shoulder every minute.
It can be fun. This is a pro, obviously. Sometimes events are boring but sometimes they're actually a lot of fun. It really just depends on what you're promoting and what the customers are like. And that can vary a lot depending on the type of store you're at, the time of day, etc. I recently got to do an event at a pet store and I had a blast because I love animals and I got to talk to people about their pets. People were showing me pictures of their dogs and cats. One guy even showed me pictures of his pet chipmunks. I definitely didn't expect that.