What are some items for show and tell that start with x?

Answer 1

There are not many show-and-tell items beginning with an "x", but perhaps you have a xylophone that you could take along.

Depending on your class and what exactly you've been asked to do, you might be allowed to take along pictures instead of items. In that case, you could try an image of a Xerox machine, an image of an x-ray or x-ray machine, or if you have access to an encyclopedia you might find an image of a xebec in it.