I have PKGBUILDs up for the following packages:

Aes2501 fingerprint reader driver
Aes2501 fingerprint reader userspace software
Argtable
Various kernel pkgbuilds (hardware specific!)
Murrine theme engine
Murrine themes
GTK+ 2 based xdialog (Arch only has a GTK+ based one)
Patched XFCE session manager (pm-utils support)

Most are either trimmed down packages (dependency-wise) or packages that are in AUR and/or have not been updated for a while. As usual - no warranties :-). You use those files at your own risk. Comments are welcome.