Okay, so the first effects pedal I would recommend for that signature shoegazer sound is a reverse reverb pedal — the one essential pedal that creates a noticeably different sonic palette than all other musical genres. A standard reverb pedal will fade out your playing after the attack; you’ll hear yourself hitting the strings and after that, the reverberation. The reverse reverb does the opposite. It’s kind of a twisted reverb sound, as you will hear the clean attack and, just as it starts to die out, you’ll hear the reverb fading in, eventually bringing the reverberated attack back at the end.
We see this all the time in genres like heavy metal for instance, which is often characterized by lots of jagged edges, sharp corners, and bold, aggressive lettering to reflect that shock element, and the loud, distorted, screeching aspects of the music. In the punk tradition as well, there’s a long history of using found lettering such as newspaper headings, stencil style design, and typewriter font, to convey the DIY ethos of the music; rough, fast, borrowed, or stolen. This has been the case since The Sex Pistols and Rancid and continues through to this day.