I find it very meditational to repair, disassemble and reassemble broken things. I don't know why, but I just find it extremely calming to have pieces fit tigether like clockwork.

Disassemble, clean, repair, reassemble. Disassemble, clean, reassemble. Disassemble, reassemble...

Especially firearms. And other similar mechanical things with alot of moving parts. It's just.... Soothing.