Abstract: A toy building set includes a plurality of building members each including at least one coupling mechanism for coupling with similar coupling mechanisms in other building members. The coupling mechanism including a proximal portion and a distal portion connected to the proximal portion. The distal portion includes at least one flexible locking element configured to be releasably locked with a plurality of similar flexible locking elements in the distal portions of other similar coupling mechanisms when the distal portion of the coupling mechanism is pushed toward the proximal portions of the other coupling mechanisms to deform the flexible locking elements from an undeformed state to a deformed state to produce locking forces in a locked position.

Abstract: A shower bath made of stones includes natural lines of joint between edges of the floor and edges of the wall portions of the shower bath, which are spaced from each other to form gaps along the lines of joint. The gaps are filled with grout except for one gap which is a water discharge gap. The shower floor is substantially planar and inclined downwardly in a direction generally toward the water discharge gap. The discharge gap is bounded at two ends by the grout filling the adjacent gaps so that water falling on the floor can exit through the discharge gap to the drain below the floor. A drain guide has an upper channel portion that cooperates with the edge of the floor and the edge of the wall portion that form the water discharge gap. The drain guide has a lower conduit that provides fluid communication between the upper channel portion and a drain pipe disposed below the shower floor.