I have my server set up primarily for my kids, which explains some of the addons I’m running:
Adv Duplicator (SVN - comes with Wire)
Door STool (SVN - comes with Wire but expanded versions are available)
Easy Precision (SVN - comes with Wire)
Simple Prop Protection
Wire Model Pack 1 (SVN)
OTHERS (that make the kiddies happy):
for_allah (aka Jihad Bomb), Halo Elite SNPC, Halo Master Chief, Halo Player Models, Halo SWEPS, hoverboard, Sonic Mod, Super Mario Galaxy, etc.
Check out this older thread asking the same question. Hope it helps!