I am a tax accountant in Tennessee dealing with self-employed individuals. The weighs are perfect for holding down small receipts and documents.
If you want your table to look authentic this is the piece you need. This is not glass so no worries of it shattering into a hundred pieces. This acrylic marker seems to be light weight but still manages to balance properly on top of stacks of chips. I actually bought a 2nd one on a separate order as I liked the touch it added to my table. If you don't have a marker I recommended picking one up from the many options available.
Heavy acrylic ball that reflects the nearby numbers in its globe top.