Depending on audience and style of music I usually bring one or two of these guitars or others I have at home. I have about 14 guitars because  I just can't sell them once  I own them. My oldest guitar is almost 50 years old!

This is my keyboard stand. The top holders hold my Vocal harmonist for guitar and vocal harmonist for keyboard, computer, digital delay! The keyboard goes on second rack and pedals I use to run the piano while I'm playing guitar and a pedal for keyboard volume, minor, diminshed, 7th chords and on/off while I'm playing guitar!

 

This is the P.A. I usually use with different size speakers, depending on the size of the room!

If I'm going to play my Electric steel string guitars, I bring this amp. If I play my Gibson nylon string guitar, I go thru the P.A.!

These are the items that go on the top rack and on the floor of the keyboard stand!

 
Of course the most important Tool of the Trade.