Attached to this post are all of the default VX, VXA, and Samurai Pack icons in the individual format used by RMXP. Keep in mind, however, that by the terms of the EULA for the RTPs, you can only use graphics from one maker in another if you have legitimately purchased both makers. In other words, if you want to use VX icons in your XP games, you need to have purchased both XP and VX.
Naturally, there are a lot of repeats between the VX and VXA icons since the VXA icons include most of the VX ones; I include them all mostly because this was done automatically through a script and I did not want to manually do anything more, but also because of the above-mentioned fact that you can't use icons from other makers unless you hold a licence for the other maker. Doing it this way ensures that people who have only purchased one of the two makers, VX or VXA, will know which icons they can safely use.