We did use a sky dish before but it was big and cumbersome to transport.
Gold flash umbrella - $10
Custom adaptor - $3 diy
Tripod - $1-5 off trademe
Weight - 1.5L drink bottle $0 rubish
under $20 easy
ebay.com/itm/33-83cm-Studio- … 1c2664078d
"33" 83 Studio Flash Light Reflector Black Gold Umbrella"