A readily available, no cost source of small disposable holders for paints, glues, etc. are those blisters cut from those annoying blister packs. I save the odd-shaped ones for soaking small parts in Evapo-Rust. A blister that approximates the shape of the part minimizes the amount of Evapo-Rust needed to immerse the part.
Don't give into wrap rage...
https://en.wikipedia.org/wiki/Wrap_rage
instead get your revenge by making use of the damn things.
