Another small project, a small guitar amplifier. I ordered the PCB board and components as a package from https://shop.pedalparts.co.uk/Ruby__Noisy_Cricket_Mini_Guitar_Amp_-_board-mounted_controls/p847124_13914413.aspx . I build a wooden enclosure from scrap wood laying around.
The above schematic is provided in the package. The whole amplifier runs on a 9 volt battery for quit a while.
I used a “old” loudspeaker to fit in de lid of the box.