Heh! I've done a lot of backstage tech work including actor wrangling for quick costume changes. When the actor is wearing a wireless mic, the radio pack often needs to be concealed beneath a costume and often against skin. Unlubed condoms are frequently used over the packs to protect the connections and batteries. (Sweat can be VERY damaging to electronics...) It's not at all uncommon to have a pocketful when the show starts and reduce the supply as mic packs are switched around backstage.

You may also imagine the number of raised eyebrows when the show's tech director asks the local drug store to order yet another box of two or three dozen dry condoms within a month of the last order.