can you even buy a practice amp for that these days? sheesh.... I guess you could get a used pod HD500? So 90s, you probably WANT like an 800 or 900 or a twin.... but you have an amp... you might want a DS1 or a rat or a muff or something truly fuzzy like a tonebender, you'll want a chorus, the small stone's fine...and maybe, just maybe a delay, carbon copy or a TC flashbak maybe.... you have a guitar right? just kidding.... mxr phase 90 and ehxmistress are ine add ons, not the ebst but the standard.... mooer makes clones for cheap, I think they make a good rat too for distortion and faux fuzz.... for your style a compressor's not a must but the dynacomp is fine, it takes flack, its fine.... you don't need anything fancy like the keely or that sldie rig thing that's a fake 1176 studio compressor in a stomp, that's silly, its a guitar
I don't remember the 90s as being entirely effects driven unless you were in my bloody valentine or the smashing pumpkins.... it was mainly ripping amps and dirt boxes....
everyone had a wah wah back then, even me, and I hate wah wah.... we all ahd morely wahs with dirt on them as I recall because they were cheap, hard to break and you got a crappy mxr distortion+ type circuit built in,,,, then alter I got a vox wah, still 90s but later.... grunge era I definitely had a morely wah with a distortion built in and no other effects for a bit until I got like a tubescreamer, Ibanez chorus and DOD distortion. Boss BF2 flanger came right around then, that or an FL9 by ibanez is a good ebet that'll do chorus as well as flange and can go between the police and nirvana easily.... everyone had a chorus pedal back then though, everyone.... only the crustiest punks did not use chorus but they probably HAD a chorus pedal at home
everyone had lots of used DOD pedals then too (because they were under $40 used unlike boss pedals), all sorts, just pick one with a weird name and buy that one on ebay and you're good.... the dumber the name the better. Dumb doesn't have to mean gonkulator, it could also be like 'american metal' that's a dumb name where its dumb because you know the effect will be dumb... or ibanez made an 'industrial distortion' LOL. You want to find something like that for a full flashback!