Abstract: A practice target that includes: a front face; a rear face; a side face with a plurality of pockets, including first and second sets of pockets into which are disposed first and second sets of magnets. The first and second sets of magnets are identical in shape but are oriented opposite each other so that when the practice targets are stacked they have mutual attraction instead of being repelled by like magnets. The magnets include notches/cutouts/protrusions/etc. that match with similar structures in the pockets to hold them in place in the pockets. There are off-center pin holes through the magnets that make sure that they are oriented correctly during injection molding. There are netting grooves between the plurality of pockets and a tether aperture with a tether for attaching to a net.

Abstract: The present invention is a sound system made from a repurposed vessel. The repurposed vessel is separated into two or more pieces for installation of a speaker assembly and then the pieces are put back in their original form. A hole is created in the vessel wall through which sound waves may pass. The speaker assembly has a connector allowing connection to an audio source. The space between the top and bottom pieces and the speaker assembly may be adjusted to tune for a desired frequency response.

Abstract: The present invention is a sound system made from a repurposed vessel. The repurposed vessel is separated into two or more pieces for installation of a speaker assembly and then the pieces are put back in their original form. A hole is created in the vessel wall through which sound waves may pass. The speaker assembly has a connector allowing connection to an audio source. The space between the top and bottom pieces and the speaker assembly may be adjusted to tune for a desired frequency response.

Abstract: A portable audio amplifier for a portable audio device or musical instrument that includes an internal housing and an exchangeable external housing and exchangeable cover, as well as a storage compartment is described. The storage compartment, which is contained in the internal housing, may contain a cord and other audio accessories such as picks, batteries, adapters, or personal items. The storage compartment can be opened through various methods, including translation, swiveling, pivoting, or sliding of a cover. The amplifier's external housing and/or cover may be customized by the user after purchase using exchangeable elements. Exchangeable external housing options, which act like a skin for the amplifier, include both manufactured housings (designed specifically as an external housing for the audio amplifier) and repurposed housings (designed for a primary purpose other than audio amplification).