I a newbie when it comes to shooting, so I may not be the best at answering this. I also like to get by cheaply. So my bag is basically an old gym bag.
Inside, I carry the following:
My guns (a 9mm semi & a .357 single action revolver)
Ammo for the 9mm
Ammo for the .357
Binoculars to see down range with
Clothespins for the targets
Clothes line (in case the line breaks)
Screwdrivers (for repairs)
Some Allen Wrenches
Small step ladder
Track shoes (left over from when I used to jog instead of shoot)
Old gym shorts
3 man tent
Extra tent stakes
50' Nylon rope
50 gal drum of fresh drinking water
6 gal can of gasoline (for the minicooper)
Map of Texas (don't need any other maps)
and My CHL
Here's a helpful tip: Be sure to put your gun and ammo near the top. They're easy to misplace.
Never argue with drunks or crazy people.