Need a potentially large, innocuous file extension

[Mr_Mischif]

I want to make my own TrueCrypt volume, but I'm having trouble thinking up a extension for it to impersonate. I need an extension that could feasibly hold 200-300 MB (so no picture/text files), yet is so ubiquitous that nobody would really want to click on it to see what it is/does (ruling out executables and video for the most part). So I'm wondering if the Hak5izens could assist me in my time of n00bishness.

[Joerg]

"*.iso" "*.mdf" "pagefile.sys" "*.raw" "*.bin"

[VaKo]

ubuntu-8+xtras.iso.ut

[Sparda]

firefox.deb

[snakey]

DontOpenThis.avi is a good one to use no one will suspect that and no one will open it. :P

[MRGRIM]

.pst or .ost ?

[Mr_Mischif]

Thanks, I got what I was looking for.