https://whisps.com/pages/samples# -fill out the form to get a Free Whisps Cheese Crisps Sample.

https://www.sendmeasample.net/neonzebra -register and install either the Alexa Skill or the Google Assistant Skill here(depending on which voice assistant you use).  Once you do that, say “Ask Send Me a Sample for Neon Zebra” and go through the steps to request it.  If you want to use Alexa, you can download the Amazon app here. It should show up in your order history here when you’re done. 
–Update– these send me a sample freebies seem to keep going out of stock, but there are some available at the moment.

https://murrayriversaltusa.com/pages/please-request-a-free-sample -fill out the form to get a Free Murray River Salt Sample.

https://www.intheraw.com/shop/sample/ -fill out the form to get a Free In The Raw Sweetener Product Sample.

https://www.theamazingchickpea.com/free-sample/ -fill out the form to get a Free Amazing Chickpea Spread Sample.

https://skinnyjoecoffee.co/? -fill out the form to get a Free 2-Day Skinny Joe Coffee Duo Sampler.

https://sparklingicerewards.com/tropicalmandarin – Join Sparkling Ice Rewards and use code TropicalMandarin when you register to get a Free 17 oz. Sparkling Ice Water Tropical Mandarin Drink. First 2,500.

https://app.sampler.io/quest-tortillachips/ -register or login with your Sampler account for a chance to get a Free Quest Protein Chips Sample.

https://www.pinchme.com/ –update-select users should have new samples available today at Noon eastern.