Guns in Melee: I always rule that someone with a gun counts as an Unarmed Defender.
Using Guns as Weapons: Guns deal Str+d4 damage when used as clubs. If the attacker rolls a 1 on his Skill die (regardless of Wild Die), while using a gun as a melee weapon it breaks.
Bennies: Players may spend a Benny to suddenly produce a piece of common, mundane gear.
And They Fight: If a player character inflicts 4 or more Wounds on an Extra, his nearby companions have to make a Guts roll against Fear as he is utterly obliterated by a wound that would kill a god, let alone some mook.
P-p-p-p-p-poker Chips: I like the Deadlands Reloaded poker chip system so much that I use it in all of my games.
Guts: I don't use Guts unless horror is a significant factor in the game.
The Burden of Proof: After about three sessions, I no longer remind people of their Edges and Skills and such; the burden is on the players after that. By that same token, if I mess up and someone calls me out, they get a Benny and I try harder.
I consider this an obsolete houserule, but y'all may find use for it:
Fate is a Harsh Mistress: A Critical Failure cannot be rerolled with a Benny. However, spending a Benny does change it into a regular Failure.