https://paperthermometer.com/pages/request-a-sample -fill out the form to get a Free Paper Thermometer Sample.

https://www.ethanaturals.com/products/single-serving-kratom -click add to cart and checkout. Use discount codes: KRATOMTABLETS and SAMPLES4FREE to make it free with free shipping.
“ETHA is unable to ship to the following locations:
US States: Alabama, Arkansas, Indiana, Rhode Island, Vermont, Wisconsin
US Cities and Counties: Oceanside and San Diego, CA; Alton and Jerseyville, IL; Union County and Columbus, MS; Sarasota County, Florida; Concordia, Rapides, Ascension, Livingston, and St. Tammany, LA”
–Update– working again.

https://www.llflooring.com/c/bellawood-hardwood/ -click the add free sample to your cart button and checkout to get Free LL Flooring Bellawood Hardwood Flooring Samples.

https://www.timbertech.com/order-samples/ -fill out the form to get Free TimberTech Decking Samples.

https://www.stikwood.com/pages/sample-questionnaire -fill out the form to get a code to get Free Stikwood Peel & Stick Wood Samples.

https://stemandrootinsiders.com/p/15546-stemandroot-apply-now  -click apply and fill out the form for a chance to try Stem & Root Bye Bye Blah Probiotic Supplements for free. They may provide you with an amazon gift card and ask you to post a review.

https://love-scent.com/free-samples-newsletter.html -sign up for the newsletter then click the confirmation link in your email. After that you’ll get another email requesting your info for the samples.

https://sfdiscountsettlement.com/online-claim/ -you qualify if you made a Shutterfly.com purchase between April 1, 2018 until August 25, 2023 at discounts from an advertised reference price and have not received a refund or credit. Proof of purchase is not necessary.

https://next.henkel-adhesives.com/us/en/support/request-a-sample.html – fill out the form to get a Free Henkel LOCTITE Sample. Industrial company required.