The one-man band set up i use for my busking is pretty compact and luckily it all fits in a collapsable trolly.
guitar & guitar-case
Custom Cajon (with integral snare, casaba and bass drum sounds)and associated foot pedals
Hi-hat with iPad bracket, and tambourine holder
Street Cube Amp
Pedalboard inc Boss VE-8 and Loopi Mic Mute
Memory foam cushion