A couple of pounds? For this lightweight stuff. A thimble full would be more that enough.
BTW, I was watching a DVD of Third Rock from The Sun, first season when it still good. Some guy gives Mary (the professor girlfriend) a thimble for her collection. It has an inscription in a foreign language and Dick (Who is jealous of the thimble giver) says it is ancient Tibetan and reads it out loud, then says it translates into "always keep me pointed toward the enemy." Mary asks what that means and Dick tells her it isn't a thimble, but
ancient nipple armor. The way she cracked up told me that it was an ad lib
par excellence, and I didn't stop laughing until an hour later.