Besides the obvious ones for starting horses (like snaffles), what are your go-to or must have bits that you like to keep around and why?

Square mouth sliding gag

d ring

start to finish

loomis gag

several Dutton styles

double draw gags

Dutton smooth 3 piece mouth in a sniffle or some kind of shank. Horses seem to love that mouth piece. At least mine do. 

L&W Lift Bit. Short & Long Shank

I have the most boring bit collection ever. Snaffels 1 jr cowhorse my little s hack a couple swivel port curbs and a half breed for my ranch horse.

Tender touch

Jim Warner hack

O-ring combo

Loomis gag

Draw reins (not a bit, I know but they STAY in my trailer)

O-ring snaffle

short shank locked Ed Wright 2 piece twisted

Medium shank locked EW 2 piece smooth

EW Pretzel

Good set of hands

I like this {A good set of Hands} the most important thing ever!!!!.. 

Most of my bits are a 3 piece dog bone mouth and chain mouths.. All are short or medium shanks.. And love my cloverleaf with a chain and a dog bone..

several o-rings with diff mouth pieces

sweet 6

goosetree bits (all w 3 piece dog bone mouth piece)

cervi short shank (3 piece dog bone)

a hack and a couple combo bits

Sabrina Ketchum told us at a clinic you find a bit to fit your hands not necessarily the horses mouth. I never thought of it like that till she said those words (more/less) but after that I have noticed the majority of the horses I ride get rode in the same mouhtpiece, just adjust shank length depending on what is needed or maybe put a combo on 

Jr cow horse 

I have a short shank Ed Wright and a little Connie Coombs that are almost the same as the Jr cow horse. Never have liked combination bits but the Don Wasson Teardrop is a nice bit. 

Petska Chain bit

Flaharty duke dogbone

Cervi short shank square mouthpiece

These are bits that fit my hands well on a variety of horses. Most everything I ride gets along with the Petska.