HEPA Filter Housing Release Button

Let's say you have a couple children who, while cleaning their room can get a little rowdy in the joy & excitement of the mandated duty. And  let's say​ hypothetically, you own a certain bagless, handheld, vacuum that operates via cyntrifugeal suckage, from a certain innovative deisgn and engineering firm in England that rhymes with "bison". In this hypothetical scenario, it is quite possible that this vacuum could be mistreated in such a way during periods of lax supervision, that the springloaded HEPA filter housing button could be broken (not that anyone would know anything about that of course). "Bison" would be happy to sell you the entire suction section for $30 + shipping, but that seems incredibly wasteful. You could just get this button replacement for about half that & snap it in. Well, if you can find the spring.