Recently I finished a fairly large pedalboard project for my home studio. I decided a smaller more portable one was next. I purchased a Pedaltrain Nano plus which measures only 18x5x1.4 inches (45.7×12.7×3.5 cm) and can hold about five or six pedals depending on their size. I think the Nano plus is just the right size. Comes with a soft case for easy transport.
I did not want to mount a power supply on the top and lose pedal space or daisy chain the power (using a One Spot). Daisy chaining is not always the best option as it can create ground loops and noise. Isolating the power is a better solution. I found that a Cioks DC5 Link 5-Outlet Effect Pedal Power Supply is one of the few that can be installed under this small Pedaltrain Nano plus (or Nano).