My third thought was a small 1/4" drive socket. That's a ghetto solution to be sure, but it might be useful.
Ya know... When I first read that "ghetto solution" thing I took offense to it because I was born in the South Side of Chicago (I'm right proud of that, BTW). But a lot of the time I seem to be having a culture clash with a lot of folks and I interpret what they say differently than what they meant. So I asked around and everybody said that "ghetto solution" meant the same thing that I thought it meant.
Maybe you ain't from around here in which case you should be made aware that "ghetto solution" is a racial slur here in America.
I use a 4mm 1/4" drive socket.
Hey, so sorry if I offended.
I am in America, have been my entire long life. I, and many people I have known, have used the term to mean a solution that is made from found materials but performs the job. The way I used it (and have heard it) the reference to the word "ghetto" is meant to convey the state of having profoundly little money. Being forced to get by any way you can. There isn't necessarily anything racist about it. The color of peoples skin didn't even enter my mind. Might be that most of the people living in ghettos are black, but how does that mean I shouldn't ever use the word? There are plenty of poor white people in America too. Trust me.
I'll try to be more sensitive about this, but I'm not completely sure that you're not being too sensitive.