This is an item of stationery (paper or writing goods), or other small merchandise such as good-luck charms, mascot straps, et cetera.
Everyone needs a Disaster Prevention Fund, and this fun item, dressed up with the NERV logo and tongue-in-cheek graphics, will help you save up for a rainy day! Simply assemble the jigsaw puzzle pieces into a cylindrical shape onto the provided base; attach the collar at the top, pop the lid (with convenient coin slot) into place, and start saving! I bet Gendo has one just like this on his dresser.