Reddit reviews Neewer 5 in 1 Portable Round Lighting Reflector Disk Kit: 43 inches/110 centimeters Reflector Panel with Grip,Carrying Case and 6-Pack Muslin Backdrop Spring Clamps Clips for Photo Studio Photpgraphy
We found 1 Reddit comments about Neewer 5 in 1 Portable Round Lighting Reflector Disk Kit: 43 inches/110 centimeters Reflector Panel with Grip,Carrying Case and 6-Pack Muslin Backdrop Spring Clamps Clips for Photo Studio Photpgraphy. Here are the top ones, ranked by their Reddit score.
KIT INCLUDES: (1) 5-in-1 Lighting Reflector(Gold, Silver, White, Black, Translucent); (6) Muslin Backdrop Spring Clamp; NOTE: Background and support system are not includedMULTIPURPOSE: Gold: warm up the picture; Silver: brighten the picture; White: bounce light into shadows; Black: block out unwanted light; Translucent: soften light, often used overhead; Folds easily to fit in its caseEASY TO CARRY: Comfortable grips on both sides of the reflector; Easy to holdDURABLE: The case is made of black heavy duty material with a sturdy zipperSPRING CLAMP: Metal construction with rubber pads keeps things extra secure and damage-free; Rubber End Grips keeping things extra secure; Perfect to hang your backgrounds onto your support system or clamp lights to stands
It looks like he's just made some reflective cards with card stock and foil.
You can do this with foils or paper. Maybe even buy a reflector and cut it up/stick it on index cards.