The first one that comes to mind is Crowdtap. You answer questions to earn points that you later cane exchange for gift cards. They also give out products in exchange for reviews. I have had some problems with them deactivating my account without notice. They claimed my answers were too short.
The next one I would say is the best is Pinecone Research. They do product testing before the product hits the market. you get to keep the product in most cases and they give you points for completing surveys and testing products. The points can be turned in to money or gift cards. one point equals a dollar.
I do reviews on a site called Influenster. They give away products for you to review on their site and sometimes the brand site. You have to connect all your social media accounts. You should follow me on there to help get more voxboxes. My handle is @dreamstar1666 .
If you like samples and some regular size products you should try Pinchme. They do surveys and once a month they have samples. You need to log on that day to claim them. they have box giveaways some times.
Sample Source is another good free sample box. They only release boxes four times a year following the seasons. You sign up and when its time they will email you.
I found I new one that I like it does more food-related products. Its called Social Nature. They do vegan, organic, healthy style products. you get coupons for the products in the mail and all you have to do is review them. you get more than enough coupons, so if you like the product you can get more at a discount.
I do have a subscription box from Walmart and it $5 four-times a year, so its seasonally. they do mostly sample but they have a few full-size products. it’s mostly beauty-related.
If you want me to try your products and maybe leave a review. You can use the contacts page to reach me or on one of my social media pages.
Dreamstar101 