It's definitely not research, so you should put it down as lab experience. A friend in my lab who did stuff like that, cleaning different dishes, slides, putting away microscopes, etc. and put it down as research. An adcom called the professor in charge of the lab, asking "what kind of research did you do with so and so...." and he allegedly cracked "intensive research on the best cleaning methods" or something like that.
Also, it's not hard to join a serious project. Plently of profrs need grunt work for their research, running numbers, taking notes on specimens, etc. Hell, sometimes they just need people to type up their notes, or summarize simpe articles. If you really want to, they probably would still let you clean everyone's slides as well.
And by the way, that is not "research assistant."
OP, do this. Go door-to-door asking faculty members if they need help doing research. Don't ask to "volunteer." I mean, who's gonna pass up a free cleaning lady? Also, does your school have some program to facilitate undergrad. reseach? This is how I bypassed the "lab gofor" stage, and got my first co-authorship (ISI!) before sophomore year.