A teleidoscope, like a telescope, just has a lens, with no objects inside. The objects will be whatever you look at in the room! Art will appear as you move around! The smaller image is shown looking at a Coca Cola can! These have been a popular item for business gifts, because they can be engraved with your business logo (as shown above) for an additional cost.
Shown below are three popular styles you might consider. For more information click on the image that interests you.