It's kind of faded from the scene but the most self-contained "out there" analog delay is probably the Echoczar/Angelbaby. LOTs of weird stuff you can do with it.
For something less unobtanium, the Moog 104z has all those CV inputs which will also respond to input voltage from your guitar thru a loud overdrive...
I just got a red panda particle, often referred to as a delay, and it can be a straight delay in some settings, is more a sampler. The sample and pitch shifting type effects it does are strange and wonderful. Red panda lab, check it out.
A new toy in my delay box is the Diamond Quantum Leap. Very unusual feature set; all kinds of musical time and pitch bending possibilities between 12ms-600ms. All the wackiness happens with Diamond's amazing tone quality, too.
Two analog filters with digital effects (delay being two of the effects) in a feedback loop with an LFO and an envelope follower modulators in stereo (or mono if you use the 2nd channel in series).
Not quite a guitar pedal, but the oddest delay I own.
Gotta have a feedback loop to get in the bizarre neighborhood for me.