Here's my first Pedaltrain setup. It's not pretty, nor wide as a church door, but 'tis enough.
So what to do with that empty space? Perhaps a Compression/Sustain pedal of some sort? Perhaps a more dependable delay pedal? I won't be able to afford new toys any time soon, but that space on the top left certainly calls out to me.
The Internet Archive
YouTube: ephemeral ideas