Hi!
I started using two Minirig 3 speakers on my pedalboard. They are self powered and quite loud, and along the bluetooth wireless connection, they feature minijack sockets and alow chaining of multiple units. A sub bass unit is also available, but i don't have one. Mine are directly connected on the outputs of a DSM & Humbold Simplifier amp simulator, and they are a great solution to play alone on the go without an amp or cabinet. Of course they won't be powerfull enough to play with a real drummer.
I added this speaker to the "utility" section. If a moderator thinks such unit doesn't belong to a pedal board, please delete! But they are on mine right now :)
Cheers!