Abstract: A writing instrument having a substantially tubular body including a first and second end and a writing tip associated with the first end. The writing instrument includes a receptacle integrally formed within the second end and having a retaining portion to engage a removable auxiliary module including a securing portion, the removable auxiliary module adapted to be secured within the receptacle by the cooperation of the retaining portion and the securing portion. The writing instrument further includes an auxiliary module cap adapted to engage both the second end adjacent to the retaining and securing portions and the first end adjacent to the writing tip.

Abstract: Mobile hydrogen generation and supply system comprising hydrogen precursor storage means for storing one or more hydrogen precursors; one or more hydrogen precursor conversion means selected from the group consisting of means for converting a hydrogen precursor into gaseous hydrogen and means for converting a hydrogen precursor into a hydrogen-containing intermediate; one or more delivery means selected from the group consisting of delivery means for offloading gaseous hydrogen and delivery means for offloading a hydrogen-containing intermediate; and mobile support means for mounting the hydrogen precursor storage means, hydrogen precursor conversion means, and one or more delivery means. The system may further comprise one or more means selected from the group consisting of means for converting gaseous hydrogen into stored hydrogen; means for containing stored hydrogen; means for converting stored hydrogen into gaseous hydrogen; and storage means for storing a hydrogen-containing intermediate.

Abstract: A portable toilet and waste receptacle system is provided including a toilet seat and a conventional bucket for performing toilet functions, said seat being attachable to the upper rim of a bucket for use in locations not having conventional toilet facilities. In one embodiment, a flexible waste container can be placed within the bucket to receive human waste. The flexible waste container can be sealed, stored in the bucket, and a separate sealable lid can be placed onto the bucket to seal-in the waste contained therein.