I'm not sure what you mean by "little" - Takinmytyme's ideas sound to me like quite a lot! You also used "meetings" (plural) and said "weekly" so I guessed you were thinking this would be a fairly regular thing? If so, you could spread some of those ideas over several meetings.
For something really little how about a bookmark with an inspirational quote on one side and a calendar on the other. You could stamp on the quote side to pretty it up and personalise it. There's a bookmark calendar template in the thread
here.
For something slightly bigger, a journal or desk diary might be good - again, you could personalise with a stamped cover and maybe a printed motivational quote on there.
If your workers have filing cabinets or metal lockers near their workspace then maybe little magnets would be good. The ones made with glass pebbles are cute and you could stamp or print anything you wanted to stick to the back of the pebble. I also did some ages ago that were circles die cut from cereal packet with a stamped circle stuck on top and then triple embossed with UTEE - bigger than the glass pebble ones and also cute.
Good luck with the new role!