I got much better battery life out of my Gameboy pocket with the help of electrical tape, some bits of wire and a pair of D cell batteries. 9 year old me was p

I got much better battery life out of my Gameboy pocket with the help of electrical tape, some bits of wire and a pair of D cell batteries. 9 year old me was particularly proud of the self made spring that fit between the batteries. Adult me would probably put the batteries side by side though.