My saddlebags got lost in the move, so now I carry everything in my purse...
Seriously I don't care what I look like anymore!
This one has clips I attach to my belt loops, with the strap, it never bounces! Water, two knives (one thin needle and one large serrated), pads, duct tape, phone, turkey sandwiches, nylon string, flash light, gun, steripen, spare screws, and a poncho.
The strap clips on and is long enough to use as spare reins, it's strong duct canvas in case I need to cut and wrap/patch, has strong spare welded rings I can cut off in case I need to make a light wench/pulley, and it's always attached to me