People always ask me about my lighting so I wanted to share a little bit about my process ... it's pretty simple!
I use a 40x60 reflector 90% of the time! It's always with me - here's one that like from Amazon:
Neewer 5 in 1 Portable Multi 40"x 60"/100 x 150CM Camera Lighting Reflector/Diffuser Kit with Carrying Case for Photography
I don't buy expensive ones because I like the ease of folding one as opposed to using something like a CA Sunbounce (those are awesome but I don't need all that and if you don't need it, don't buy it!)
My philosophy - in general - is keep it simple. I don't like carrying around lighting; even when I DO use OCF, it's the small Profoto A1X. It's not cheap but it's small and super powerful.
But in general, I will use a giant reflector for 90% of my sessions - only the silver side because I like to retain facial features and not "flat light". We saw a LOT of that in the early 2000's - that super soft flat ...