I think a simple electrolysis would bee reasonable enough even for a newbee. After all you need nothing but water, ZnCl2, a lead (or graphite) and copper electrode and an electricity addapter (the copper is for the katode, the - polarity!).
see Post 490034 (https://www.thevespiary.org/talk/index.php?topic=12546.msg49003400#msg49003400)
(Nicodem: "The short “use the overvoltage” FAQ", Serious Chemistry)