Tripods can be very handy when you are the only person shooting videos.
Also it helps in image stabilization.
Tripods are of mainly 3 types.
DSLR tripods
Tripods for Compact Cameras
Tripods for Mobile phones
Tripods can be made from various materials like aluminium, plastic etc. Gorilla Tripods are useful
when you want to mount it on trees. Some vloggers also use monopods to mount the cameras.
Tabletop tripods take less space and they are the best for shooting indoor.