Here is a little youtube demo I came across today of one of my favorite compact phase shifters, the Univox Micro Fazer.
Luckily these are pretty easy to track down, and were also put out by a ton of different manufacturers.
They're good if you want a quick and easy Uni-vibe(ish) tone.
My favorite use is with some fuzz, but unfortunately this video doesn't cover that ground so you'll have to trust me///
thanks for watching!