For my bikes that have tubeless tires, I have both a regular plug kit plus some of the plugs that you screw in with a phillips. My scout and Bonneville have bags, I have a travel kit I throw into either one. I have one of those electric air pumps that are the size of a soda can.
Thats why my XS2 was on the tow truck, tires with tubes and I picked up a screw in the road, instant flat tire. I was about 25 miles from home in that photo. I always carried a nice took kit, but no use in that scenario!