Rare in cultivation, Tillandsia marconae is a species with whitish, rather soft leaves that is 7—10 cm in its mature state. It offsets easily and frequently and will form an almost perfectly spherical, dense clump. The photo is of a small clump.
Water just the outside part if you have a clump. In humid, hot environments, you may want to open the clump inside to allow natural air ventilation. And it’s not expensive!