My local Wal-Mart has little bitty
compressed air filters! Campbell-
Hausfeld inline filter cost me
$11.98. I'm already set for barb
fittings, etc. I found it in the
automotive section, with the rest
of the air compressor stuff. This
guy's about 1" diameter, plexi sump,
4" high overall. The sump screws off
and there's a Schrader on the bottom
too.