This week mine was homemade soda. Fermented sodas, citric acid + bicarbonate sodas, different juices and flavors like lime + lemon + cherry and pomegranate or mango peach or cola (homemade knock off)
It is possible to make your own! You can use an old tablet, or even better a raspberry pi and touch screen. Then you add a hat with a better dac and send the audio to an amp. It's really cool, but I'm pretty sure just buying an actual aftermarket unit will get me a better unit for less money and much less work...