There’s a term going around magic which is called “every day carry” and it refers to what you always have in your pockets. Typically this means whenever you leave the house, it’s in your pockets or on your person. This refers to props that you would use for spontaneous performances. I’m intentionally not using the word impromptu because that usually refers to magic using things you find around you at that moment.
When I host shows, have planned material for known stage delays, like when an act has props or rigging that needs to be set up and I’m aware that I’ll need to kill time.
Then there are unplanned stage delays. These are when a performer isn’t ready, rigging is taking longer than expected, or whatever. For these situations, on my person I always have a a bunch of material on me that I can instantly perform. this is my MC EDC:
I have material of varying lengths and most of the longer routines, like the color changing silks can be broken up into two shorter routines if needed.
If you are thinking of doing any stage hosting, you really should consider having at least a couple of tricks in your pocket that you can use for unplanned stage delays!