A device designed to take rotary power from an external power source such as a cordless electric screwdriver and transmit that energy into both rotary and reciprocating linear activation of sexual devices used by both males and females for the purpose of masturbation and auto-stimulation is disclosed. The bag can convert into a sling for carrying a child. The sheet corresponds in extent to a surface of an electronic device, preferably a surface of a display device of the electronic device. A front cut-out is defined along the front which is well-suited to allow the tray to be secured to a workbench by way of workbench swivel pegs. The retainer prevents relative movement between the cap and the shell until the retainer has been removed.