Just like going to Costco and getting free samples of different items, you can request free samples online from major companies that are promoting their products and have it shipped to you. There are many websites that post these freebies including Bargainator, I Crave Freebies, and Start Sampling. Beware there are some websites that post fake or fraudulent freebies and that is why I recommend only using the websites above. Please also note some of the freebies do expire.
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US residents can opt out of "sales" of personal data.