Compressor alternatives?

For mud effects requiring an air source, I use my 12 volt tire inflating device, along with a Testors glue tip (which happens to be the exact same size as a Schrader valve stem). For the chipping technique involving an acrylic paint applied over hairspray, I use Montana Gold's line of acrylic rattle can sprays.  And for the application of enamel washes and filters over my rattle can enamel base coats, I also use either Montana Gold's acrylic gloss or matte clear, as the protective coat. I refuse to get an airbrush for personal reasons, and like the challenge of utilizing alternative products and techniques. The main draw back with this reasoning, however, is the inability to mix different shades of one color, when applying the modulation technique, or when a very specific mix of colors is required, to duplicate a shade that is very peculiar to a particular armor. I have not reached that point yet, and for now, I'll continue to model sans compressor and airbrush.

I remember my first airbrush back in the 60's came with an attachment to fit a tire. Lets just say my mom never did figure out why one of the brand new tires on her car went flat!!!!

You sir get the record for resurrection of a zombie thread! 11 years!

I used to use one of those portable tanks with the regulator and they work fine.  With a lot of color changes and cleanings, I went through a tank pretty fast.  Most hardware stores should carry everything you need.  You might want to take your airbrush hose with you as you'll probably need an adapter between the regulator & hose.

when I was a poor boy I use to use a truck tire my dad rigged up when low I would roll it to the gas station down the block.