counterweight question

i have misplaced my counterweight and i was wondering if there is anything i can use that is a common household item as a counterweight? i tried one of those big erasers but it was too light. any ideas?

ive gone to wallmart and bought a five pack of dice and used a drill to put holes through them, but they arent heavy.

two 16mm die (what comes with most board games) with holes drilled in them have a great weight for most yoyos.

Metal washers

I made my own cw with a “make your own rubber ball” kit
I had the kit for like 10 years though before I did anything with it, so not sure if they still exist. check like a michaels if you want.