No room for a side table? Compare the alternatives
A drink stabilizer, sofa arm tray and compact table solve different space problems. Choose by the job you need done.

Steadi: a wider base on a surface you have
Steadi is useful when the surface already exists and you want compatible drinkware to have a wider stance. It requires 5.2 inches of fully supported footprint, plus handling clearance. It does not supply a tabletop or storage compartment. The holder goes around a drink base 2–3.15 inches across; low handles, boots and shape still need checking.
Arm tray: check your actual sofa arm
An arm tray can add a place for small objects without another table on the floor. Its suitability depends on the tray and the arm. IKEA describes RÖDEBY as a bamboo armrest tray for placing items within reach. Its current manufacturer guidance specifies flat armrests 4–12 inches wide. Check the exact product instructions and your arm’s shape before choosing. Do not infer that every tray fits every sofa, or that a cup placed on one cannot tip.
Compact side table: a separate surface
A slim or C-shaped table can provide a drink surface independent of a cushion, plus room for other items. Check the table’s base as carefully as its top: it still needs floor clearance, and a base intended to slide under furniture needs enough room below your sofa. Check that doors and drawers still open and that the table is stable on your floor.
Tray on an ottoman: support before styling
An ottoman may already occupy the space, but it is not automatically a level tabletop. Choose a tray intended for the use, follow its instructions and check support. Remove drinks before anyone uses the ottoman as a footrest or seat. Steadi cannot prevent a tray or the entire support from tilting.
A simple choice
Already have a good spot and a compatible drink? Consider Steadi. Need somewhere to set a drink and snacks? Look first at a suitable tray or table. Need storage as well? Furniture may do more for the room. The best answer is the one that fits your actual layout; adding another accessory to an unsuitable surface does not create a good setup.