A PCB with a few resistors, LEDs, and four battery holders with AA batteries, standing on its edge on my desk.
https://cdn.fosstodon.org/media_attachments/files/113/338/739/891/811/063/original/7a762b6216b32739.jpg
My DIY Ni-MH charger that I built from plans provided by Big Clive a few years ago is still working strong :3
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