Abstract: A device for projecting objects includes a frame having an aperture therethrough and a pouch with opposed sides. A gripping element is adjacent a proximal end of the pouch, and a distal opening is vertically defined by the distal edges of the opposed inner faces. A plurality of elongated elastic elements are affixed at distal ends around the frame and at proximal ends to the pouch. The elastic elements are threaded through the pouch and are positioned to horizontally define the pouch opening. The pouch is movable between a stretched position wherein the elastic elements are biased in a proximal direction and a projecting position wherein the pouch is released. When released, the elastic elements urge the pouch in a distal direction toward the frame aperture and permit a projectile positioned in the pouch to be released proximally through the pouch opening and the frame aperture.

Abstract: A drinking vessel with an ice container mountable within the vessel to cool the vessel contents without diluting it, and a heat chamber for burning fuel to heat the vessel contents. The ice container is removably mounted in the vessel by magnetic members, or by snap engaging members, or by mating threads on the vessel and the container.

Abstract: A combination catamaran boat and cross water ski system includes left and right hulls, a bridging deck, and a steering system. Each hull includes a rudder in its keel portion and a rudder plate on its top, connected by a rudder shaft for pivotal movement. A footpiece on each rudder plate is for a skier's feet. The steering system includes a tiller above the deck connected to a tiller lever system below the deck, and a rudder crossbar connecting the tiller lever system to the rudder plates on the hulls. The left and right hulls are separable from the deck and steering system, and convertible to use as right and left cross water skis respectively. Ski poles each include a handle with an upper portion and laterally offset lower portion, and a pontoon.