Sadly not possible in my office. Janitors are not allowed to touch anything unless it has to be cleaned or thrown away. One of them told me they couldn't accept stuff from the engineers just in case someone thought they stole it.

Unsung heroes. I have the habit of spending time with janitorial staff in the places I've worked. Honestly I have met only good people and I'm sad to see how a lot of people just ignore them and belittle them.