Who doesn’t enjoy a night with the stars.
Contact your local observatory; chances are good that they will have a member of the community who just happens to be passionate about astronomy and who has a decent telescope and who may just be happy to visit your facility with the said telescope one night. The night will have to be clear and the moon needs to be in its early stages – i.e. not full and you will also need suitable outdoor space.
Why not give them a buzz and give your clients a chance to explore the solar system?