Favorite cheap must-eats in Vegas? On or off the strip!
The off-the-menu steak special at Ellis Island behind Bally's gets my vote. Decent steak, potato, green beans, soup or salad, and a house-made beer for $7. It ain't what you'll get at the fancy steakhouses on the Strip, but c'mon, $7 doesn't even get you the potato at those places! They also have a brewery patio that has BBQ ribs and chicken at equally amazing prices.
Ellis Island Casino & Brewery
4178 Koval Ln, Las Vegas, NV
La Mexicana is one I found out about here on Chowhound last year and have been going back to quite a few times since. It's located at 3675 S Decatur Blvd., between Flamingo and Sahara, about 5 minutes by car off the strip. Here's the link to a thread about La Mexicana posted here about a year ago. My review is about halfway down the page, along with other (better written) reviews.