Abstract: An expandable piñata including a body having a front wall, a rear wall, a left side portion, a right side portion, a top portion, and a bottom portion that define an interior cavity of the piñata; one or more pouches coupled to each of the front wall, back wall, left side portion, and right side portion; and a valve coupled to the body and configured for selectively inflating and deflating the interior cavity, the body being inflatably and deflatably adjustable between a first, substantially flat configuration, and a second expanded configuration.

Abstract: Methods and systems for automatically tuning a drum are disclosed. In some embodiments, the methods and systems include the following: (a) exciting a drum head to cause it to resonate; (b) sensing a vibration frequency at one or more points relative to each tension rod; (c) determining a global average vibration frequency of the vibration frequencies for the points relative to each tension rod; (d) comparing the vibration frequencies of each of the points relative to each tension rod to the global average vibration frequency to determine a correction value for each point relative to the global average vibration frequency; (e) automatically turning each tension rod based on the correction value for the relative points; (f) automatically repeating steps (a)-(e) until each of the vibration frequencies of each of the points relative to each tension rod is substantially similar; and (g) automatically turning each tension rod in a uniform direction substantially simultaneously.

Abstract: An expandable piñata including a body having a front wall, a rear wall, a left side portion, a right side portion, a top portion, and a bottom portion that define an interior cavity of the piñata; one or more pouches coupled to each of the front wall, back wall, left side portion, and right side portion; and a valve coupled to the body and configured for selectively inflating and deflating the interior cavity, the body being inflatably and deflatably adjustable between a first, substantially flat configuration, and a second expanded configuration.

Abstract: Methods and systems for automatically tuning a drum are disclosed. In some embodiments, the methods and systems include the following: (a) exciting a drum head to cause it to resonate; (b) sensing a vibration frequency at one or more points relative to each tension rod; (c) determining a global average vibration frequency of the vibration frequencies for the points relative to each tension rod; (d) comparing the vibration frequencies of each of the points relative to each tension rod to the global average vibration frequency to determine a correction value for each point relative to the global average vibration frequency; (e) automatically turning each tension rod based on the correction value for the relative points; (f) automatically repeating steps (a)-(e) until each of the vibration frequencies of each of the points relative to each tension rod is substantially similar; and (g) automatically turning each tension rod in a uniform direction substantially simultaneously.