How soon do you need it? If you're shooting this week, then I guess you'll have to make one.
But if you've got some time, I would just contact a beer company and ask for permission. I got permission from Pabst to use both PBR and Colt 45 in one of my movies. It was quite easy, just took a little while.
Every major corporate retailer has a full-time employee in product placement. Though they won't be paying you to show their product, technically what we're talking about is product placement. I got permission by calling the company headquarters and asking for contact info for their product placement person. I was given an email address. I sent a brief email asking for permission, with a brief description of the project. Within maybe a week, I got a reply asking me to send them the pages of the script that featured the product. I replied in kind, and maybe a week later, they sent a PDF giving permission to use their product, with conditions attached (no underage drinking, no binge drinking, no illegal activity while drinking).