What house rules do you use?
Wild Wednesday! How much do you guys and gals homebrew? In con games I usually run published systems more or less btb, but in my home games I haven't really stopped tinkering since 1977. (You were forced to back then, unless you were heroic like Ken St. Andre and just designed your own system instead!) One thing I like about old D&D is actually the modularity of it - you can insert or remove not only classes, races, monsters, and spells but rules for combat, initiative, and other things as well. (Arduin, Arms Law, or Hackmaster critical hits? No problem!) We try to publish at least a few interesting house rules in every issue of Fight On!
What are your favorite house rules or homebrew approaches to OSR games?