A base having legs supported on wheels. A second leg may be positioned between first and third legs and the first leg may be positioned between the second leg and a fourth leg. A first gap is positioned between the second and third legs, and a second gap is positioned between the fourth and first legs. The first and second gaps are configured to at least partially receive a user's first and second feet, respectively. A keyway with a bridge may be defined between the first and second legs. A key that may be formed in a fifth leg is removably receivable inside a like keyway of a like base to thereby interlock the bases together so that they are moveable as a unit. An end portion of the key is positionable underneath a like bridge of the like keyway such that the like bridge limits upward movement of the key.

A magnetic frame mechanism including an outer frame, first drop center wheels, first brackets, a permanent magnet block. The outer frame includes a face plate, a first side plate, and a second side plate. The first side plate and the second side plate are vertically fixed on two ends of the face plate, respectively. The permanent magnet block is sandwiched between the first side plate and the second side plate. The first side plate and the second side plate include guide structures, and the guide structures include first guide rails. The first drop center wheels are fixed on the inner side of the face plate via the first brackets, respectively. The platform mechanism includes a platform plate, four magnetic travelling wheels, four second brackets, a second guide rail disposed on the surface of the platform plate, and a tension spring.

A hook attachment for an IV stand. The attachment has hooks attached to at least one longitudinally extending portion. The hooks are configured to position bags such that their labels are each visible from the same side of the hook attachment. The hooks may include first and second hooks coupled to first and second longitudinally extending portions, respectively. The first and second hooks are configured to have first and second bags, respectively, hung therefrom. The first and second longitudinally extending portions are sufficiently spaced apart vertically to allow the labels of the first and second bags to be visible. The hooks may include front and rear hooks connected to a longitudinally extending body portion. The front and rear hooks have first and second portions, respectively, whereat front and rear bags, respectively, are positioned when hung therefrom. The first portions are below the second portions.

A base having legs supported on wheels. A second leg may be positioned between first and third legs and the first leg may be positioned between the second leg and a fourth leg. A first gap is positioned between the second and third legs, and a second gap is positioned between the fourth and first legs. The first and second gaps are configured to at least partially receive a user's first and second feet, respectively. A keyway with a bridge may be defined between the first and second legs. A key that may be formed in a fifth leg is removably receivable inside a like keyway of a like base to thereby interlock the bases together so that they are moveable as a unit. An end portion of the key is positionable underneath a like bridge of the like keyway such that the like bridge limits upward movement of the key.

A hook attachment for an IV stand. The attachment has hooks attached to at least one longitudinally extending portion. The hooks are configured to position bags such that their labels are each visible from the same side of the hook attachment. The hooks may include first and second hooks coupled to first and second longitudinally extending portions, respectively. The first and second hooks are configured to have first and second bags, respectively, hung therefrom. The first and second longitudinally extending portions are sufficiently spaced apart vertically to allow the labels of the first and second bags to be visible. The hooks may include front and rear hooks connected to a longitudinally extending body portion. The front and rear hooks have first and second portions, respectively, whereat front and rear bags, respectively, are positioned when hung therefrom. The first portions are below the second portions.