A good collapsible reflector dish ALWAYS comes in handy. I have this one, and I wish I got one even bigger!

Neewer 5-in-1 Oval 80X120cm/31"x47" Professional Collapsible Multi-Disc Light Reflector with Translucent, Silver, Black, Gold, White surface https://www.amazon.com/dp/B00GNV6MMU/ref=cm_sw_r_cp_api_VzUhAbVAG59R2

Also, a good speed light and a Gary Fong diffuser help a ton.