Citing dissatisfaction with the aesthetics of modern digital displays and a nostalgic fondness for the styling of obsolete technology, significant numbers of electronics enthusiasts have shown interest in reviving Nixies.[12] Unsold tubes that have been sitting in warehouses for decades are being brought out and used, the most common application being in homemade digital clocks.[2][13][7] During their heyday, Nixies were generally considered too expensive for use in mass-market consumer goods such as clocks.[7] This recent surge in demand has caused prices to rise significantly, particularly for large tubes, making small-scale production of new devices again viable.