features suitable for ultrasonic welding adhesive bonding solvent bonding snap together joint design or removable fasteners the housing halves are shown as molded plastic parts but they may also be made from any other material suitable for the purpose if they are made as molded plastic parts a preferred plastic material is abs those of skill in the art will understand that it is possible and perhaps in some applications preferable to mold directly into the stem a handle portion 7 which can be used by a cup stacking participant to easily hold a sleeve of cups retained upon the stem as those in the art will understand the handle 7 could be made of virtually any suitable material and could be made as part of the stem or separate and apart from the stem housing it should also be understood that the plunger 5 need not extend through the handle but could be configured in any number of ways understood by those skilled in the art fig2 also shows an embodiment of the handle 7 of the stem 4 which includes a hole feature 8 as part of the handle design this hole may be used to contain a wire loop 9 and clip assembly 10 which is useful for transporting the stem and cups assembly by attaching the clip to a belt loop backpack etc of the user the clip may also be used to temporarily store the stem assembly on the backpack or belt loop of the user when it is not being used to hold the cups alternately the handle may be designed without a hole feature and the assembly may be transported by simply grasping the handle alternately the hole may be in the plunger 5 and the wire loop.