Cobble enough of them together all set to full blast on manual with el cheapo slaves, and they can be vaible to fill the lighting needs of a small DIY soft box.
I had four such units firing into a home made 24x36 soft box made from white foam core, with a face of drafting mylar for a diffuser.
I peeled the reflectors out of four small (guide number less than 50 (in feet) units I had littering my orphan camera bits storage box and propped the bare flash tube out on little supports fashioned from clear drinking straw bits assembled using a hot melt glue gun. Later on I added two more to bring the complement to 6. They were held in place with rubber bands that wrapped around a pair of dowels that enterd the rea of the soft box. Other dowels supported the box, and all dowles were drilled into a spruce block thatwas attached to a clamp to attach it to the light stand. It was not pretty, but was built for under $70, most of which was for camera show purchased slaves.
I used a PC power supply from an old surplus computer that was being tossed at work to power the all flashes. I made power blocks from whitled spruce to emulate 4-aa's to put the power terminals in the right spots in the different battery compartments. The power supply was hung on on the bottom of the support stand to act as ballast, and would pump out up to 20A at 5v if you needed it to, so the recycle time even with 6 flashes being fed from it was very short. It also did not get longer as batteries age, as is so often the case with 4-aa flash units.
That DIY kluge got me though the first three years of trying to do a better job with lighting for head shot portraits. It just did not fold down to travel easily. It gave great light at about 3-4' from a subject, and allowed for a moderate aperture for groups of two whan needed. If I needed less light to open up the aperture and cut DOF, I would reach in and switch off two or three flashes.
I tossed it a few years ago after the kids were both in school, and my wife went back to work, and hence cash flow was not as cramped.
I bought a used commercially made soft box and potato masher flash head and pack to replace the old rubber bands and twine contrivance. It did do what I wanted it to, but it did not put me in 'semi-pro' eyes when my clients saw it.