I have a routine where I "introduce" my band. I generally do it with "Mama Don't Allow No Music Played Around Here."
I start off with just a simple bass drum beat, and tell them every band needs a drummer. Then I'll say something like "nobody wants to hear just a drummer", so I'll say "here's my bass player", I'll use manual bass to play a short solo, then flip it to auto bass.
Next comes maybe the "piano player" and I'll play a short solo on Piano. Then I tell that the Guitar is my favorite instrument and play a ride on that. Meanwhile, I'm changing style variations and pads that subtly add the parts to the style. Sometimes I tell them, "oh I forgot the Sax Man, you know he's the one that gets all the women!" Then go into a quick verse of Yackety Sax. If they are into it, I'll do the Organ, maybe Harmonica, and Musette.
The verses to the song can be altered to fit whatever instrument I'm soloing at the time. It usually goes over really well. If they are paying attention, I'll end it quicker.
I'm sure to make faces and do slides that show how hard I'm working to play the instruments.
When it's over I tell them that's why they hire me--if they had to pay all those musicians, drinks would be $100. each! If I think I can get by with it, I might say, "Please leave generous tips for the band; I have to divide it about 10 ways! Of course the tips are optional, but if you don't applaud I'll introduce the Horn section and Oboist."
It's all just BS, but it works.