So how about "whosits", in honor of Dr. Seuss's "Horton Hears A Who!", wherein there is a civilization of very tiny creatures that dear Horton cannot see, but only infer the existence of. Perhaps that is projecting too much personality onto such simple items. Maybe "whatsits" would be a better term, since they are certainly "whats" and not "whos". Or if we really wanted to show our confusion we could call them "whoser-what-sits". I do not know, that name may be just too long, "whatsits" is my choice, my final choice, "sub-atomic whatsits".
Update October 2016 replace missing pictures.