Cup holder, coaster or side table for a vanity?
Choose the job you need: a wider base, surface care or extra space.

A coaster is about the surface
A coaster is a separate product chosen for the furniture and drink. Follow the furniture maker’s care instructions. Steadi is not a waterproof coaster and carries no universal no-mark guarantee. A wider base should not be used as evidence that a delicate finish is protected.
A holder is about the resting footprint
Steadi grips the lower part of a compatible container with flexible fins and widens its resting base. It does not seal the drink or fasten to the table. If you use a protective surface beneath it, that surface must itself be level, stable and large enough for full support.
A side table is about available room
When brushes and storage already fill the vanity, another surface may be the more useful purchase. Check seated reach and drawer clearance before choosing its position. The goal is a drink spot that leaves the routine comfortable, not fitting one more object into a crowded corner.