These are the companies that SEND their stickers for free (I update the list every day with new companies):
IMPORTANT: some of this are Italian companies and might not send stickers all over the world. If you try from other countries please let me know in the comments from wich country you are and if it worked or not.
Beta Tools: firstname.lastname@example.org
Smith & Wesson (ships only in the U.S.A.): http://sales.liveperson.net/hc/s-90007204/web/tic...
Tucano Urbano: email@example.com
Monster Energy: https://www.monsterenergy.com/#!/pages%3Acontact
MMA Warehouse: firstname.lastname@example.org
TSG (doesn't ship to Italy)(the following e-mail is only for America. For other countries click here and choose your country): email@example.com
Coca-Cola (doesn't ship to Italy)(the link is for the American site. If you are in another country go to the respective site): https://secure.coca-colacompany.com/ssldocs/mail/...
Royal Purple Oil: http://www.royalpurpleconsumer.com/contact/
Gorilla Glue (ships only in the U.S.A.): http://www.gorillatough.com/contact
Goal Zero: http://www.goalzero.com/contact_cust_serv.html
TCX Boots: firstname.lastname@example.org
COMPANIES THAT DON'T SEND THEIR STICKERS FOR FREE:
Step 1: Find the E-mail Address of the Company
For first, you have to go to the company website and look for the e-mail address. You'll probably found it on the "Contact Us" section.
I decided to use as example the Beta Tools website.
Step 2: Write an E-mail to the Company
Now you have to write an email to the company where you ask for the stickers (you can copy the one I wrote on the photo with your informations)
Step 3: Finished
Now you have only to wait that the stickers come home.