If your coffee table has a lower shelf you don’t have to fill both levels but if you choose to try lining up the items on each tier. Use two pairs instead of threes and don’t forget to play with heights. A lidded storage box or small basket can help keep the bottom level looking sharp while giving you a place to stash items like remote controls.
Another consideration is how it will sit on your floor or rug and if it will damage those surfaces. Splintered table legs or rusty metal bases can scratch or stain the flooring. Secondhand stores sometimes leave those areas unrefinished so be sure to check. Sculptural wood coffee tables tell their own story and can add a natural element and warmth to a room with multiple upholstered pieces. Sealers and of course coasters can help protect the surface from water damage.