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Traditional resonant-mass detectors involve cooling of resonant bars to very low temperatures around 1.5K (). Resonant-mass detectors such as EXPLORER and NAUTILUS were operated until 2010, and despite their increased lifetime and joint-collaboration in analyzing datasets, the teams operating these detectors did not directly claim to measure gravitational waves (). A directly identifiable signal in the data is preferable, and we eliminate traditional resonant-mass detectors as an option for tabletop experimentation.  \subsubsection{Next Generation Detectors}  Non-traditional resonant-mass detectors may be more viable. A high frequency phonon trapping acoustic cavity proposed by Goryachev and Tobar is only 2.5cm in size - well within our tabletop guidelines - and has the added benefit of operating in a vacuum chamber. This design may easily isolate it from sources of noise and with additional shielding, also prevent EM interference with the device itself when using an EM source for HFGW. When accounting for all sources of noise, the apparatus is estimated to be capable of detecting HFGW at magnitudes up to $10^{-22} \sqrt{Hz}$ (Goryachev et al., 2014). A potential drawback is the apparatus requires a very low operating temperature of 0.01K, and it is unclear whether supporting equipment will fit in within  tabletop guidelines. Despite the potential drawbacks, the Goryachev & Tobar device appears to be most feasible instrument for tabletop experimentation.