Just whatever pedal happens to be easiest to put in the car before the gig. Usually the demonator or demon drive.
I have one of these Gibraltar cajon adjustable pedal mounts that I mount under the bottom of the cajon and then attach the pedal to it.
Here’s my Christmas list if it helps!
Under $50 - Sticks - Vic Firth Signature Series Drumsticks - Dave Weckl Evolution - Wood Tip - https://www.sweetwater.com/store/detail/VFSDW2--vic-firth-signature-series-drumsticks-dave-weckl-evolution-wood-tip - Vic Firth American Classic Drumsticks - 5A - Nylon Tip - https://www.sweetwater.com/store/detail/VF5AN--vic-firth-american-classic-drumsticks-5a-nylon-tip - Shaker (not picky) - https://www.sweetwater.com/store/detail/LP441TM--latin-percussion-twist-shaker-medium - Stick bag (not picky) - https://www.sweetwater.com/store/detail/TDSB--evans-transport-deluxe-stick-bag - Hi hat holder (must be this one) - https://www.sweetwater.com/store/detail/GibrQuickRel--gibraltar-sc-qrhhc-quick-release-hi-hat-clutch
Cow bell (not picky)
Cajon Pedal Mount (this one)
Cajon pedal beater (this one)
$100
Tune bot
More expensive
Drum Throne (not picky, but want a nice one like these)
New kick pedal (this one used would be great!)