I just updated my "All-in-One" Kit, which I guess is my 'one-man band' kit...the main items below:
*1x F&V R300se Daylight Ring Light (this is usually in my camera bag as it can be mounted to camera)
1x Falcon Eyes 18D Daylight FLEX LED Panel (replaced old Lowel Rifa-Light)
1x Yongnuo YN360 BiColor/RGB LED Wand (good as a kicker or back light and also RGB for color effects)
1x Lowel-Tota (the 'oldie but goodie')
2x 5x7 Collapsible Double-Sided Backdrops (one is Chroma/Gray and the other is Black/White which can be used for bounce or negative fill)
1x 5x5 Overhead Frame w/ Skins
2x Reverse-Leg Light Stands
5x Compact Light Stand (< 30" collapsed height)
Xx Spring Clips (#1, 2, 3)
3x Drop-down Scissor Clamps
1x Gaffer/Gator Clamp
6x Sandbags (empty bags that I fill with whatever)
Xx CTB Gel for the Tota, Gaffer's Tape, Trickline, Zip-ties, LED "twinkle" lights, etc
To clarify this is my personal kit for small jobs (interviews, broll, etc). For larger jobs, usually just go the rental route (1-Ton, 2-Ton G & E, etc) as needed by the job.
For those types of jobs I usually only bring the basics - light meter(s), Gaffer's Glass, iPad, and the F&V R300se since it makes for a small compact eye light or if i just need a little fill. Anything else is usually supplied in the rented gear.