I'll join in! I love hearing the details as to how people are using things.
My main board:
Basically, my board acts as both a 'home base' for live shows and as my tonal sculptor in the studio.
Since I do a lot of for-hire commercial music sessions, the first priority was the ability to have a pure, unadulterated signal when needed. Not every client wants the 'something extra' that the pedals can provide, and many engineers and producers demand a straight-forward signal chain. All of the pedals are connected to the Loop Master True Bypass looper
except for the first 3 pedals in the chain: Barge GLZ Buffer > Xotic RC Booster > EBS Valve Drive. All 3 of these are TB on their own, but I've never turned the GLZ off & the Valve Drive is on about 90% of the time (my preferred "clean" tone has just a bit of 'hair' to it, which the EBS excels at!~).
The Barge Concepts GLZ-1 is a buffer + volume control. Given my heavy reliance on passive instruments, complex pedal system and often long cable runs- a dedicated, quality buffer is called for. The Barge sounds very transparent and also allows me to compensate instruments with different output levels using the gain and volume controls. This way, my vintage P-Bass drives my filter/od's, etc just the same as my active higher-output instruments.
The RC Booster serves 2 functions: In the studio, it gives me a very broad 2-band Baxandall eq. Very quick and easy for setting up tones! Live, I usually use it as a pick-to-fingers compensator. I often switch from pick to fingers mid-song & don't want a massive eq shift when I switch (i.e. when I use the pick treble is accentuated & the bass tapers a bit). I set the RC for a bit of treble cut & a tiny bit of bass boost. I still get the articulation and phrasing benefit/change of the pick, but I get a more consistent overall sound so it doesn't sound like Chris Squier suddenly showed up!

(nothing against Chris, just not the sound I'm after!)
Next is the EBS Valve Drive. Easily my favorite pedal ever! It's fender-style tone stack eq and georgeous, natural overdrive have become "my sound". While it's a very flexible od and preamp, I generally use it as an always-on od to give just a bit of 'hair' to my clean tone as I dig in. Very dynamic, very tube-esque! It makes solid state rental amps sound much better to me & it has replaced a host of rack pre's that I used to bring to sessions.
After those preliminary pedals, everything else is routed using the 5-loop Loop Master w/ tuner mute and master bypass. The master bypass (labeled "=") lets me activate & de-activate more than one pedal with one stomp.
Very handy! My go-to combinations are octave+envelope filter and envelope filter+compressor.
I don't use compression very often live (and use studio compressors when recording), so I have the MultiComp set up in dual band mode for a lot of compression- very "effecty". Think Tony Levin'ish. I also like how it compresses the Mu-Tron- making the overall eq tilt more even, but still letting the full effect through.
For overdrive, I've finally found my favorite set-up. It involves the Fulltone Bass-Drive in conjunction with the Xotic X-Blender. I've found that the 1 -2 punch of this pedal combination gives me the most usable & diverse overdrive to distortion sounds that I've used yet! Plus, I get the real-time mix adjustment with the big black knob! Genius! I do add a bit of bass eq to the Fulltone with the X-Blender which gives me better level control and depth. The Fulltone is set to flat mids and mosfet clipping. I get a very natural and usable transition with the boost as well, going from agressive od to full-bore distortion! Still, I can always reign it in with the mix control on the X-Blender.
The Aguilar Octamizer and HAZ Mu-Tron III+ are pretty self-explanatory.
The effect order is Octave>X-Blend/Fulltone>Mu-Tron-Compressor.
The 5th loop is an "auxiliary" loop. In the above photo, I have a Choralflange inserted. Other options for this include:
MOOG Bass MURF
AboveGroundFX Reverb
EHX Bass Big Muff
Fender Sub-Lime Bass Fuzz (amazing fuzz! Like a good big muff, but with mids!!!)
Boss ODB-3 (yup, my oldest pedal & it still gets used for more 'industrial' sounding tones...)
Boss DD-5 Delay
MXR Bass Octave Deluxe (I go back and forth between it and the Aguilar- but the Aguilar is getting used more these days)
EHX Small Stone Nano Phaser
Xotic BB preamp overdrive
Last in the chain is usually the Visual Volume. I don't always use it, but if I'm planning on doing any dynamic swelling, I love this volume! Very transparent sound + it acts as an active splitter (handy in the studio).
Other devices I use often live & in the studio include a GT Brick Preamp, Empress ParaEQ, Aguilar DB900 DI (studio), DHA custom DI (live) and Birdsong B-Box passive tone control.