Neocities.org
omg..... i was using internet archive to try and find older 88x31 button sources and stumbled upon a HUGE site of tile backgrounds :3 heres the link: https://web.archive.org/web/19991004185744/http://mediabuilder.com/graphicsback.html
I FOUND ANOTHER ONE...................... https://web.archive.org/web/20000302172929fw_/http://www.coolarchive.com/backgrounds.cfm this one does appear to have some pictures that dont load but it also has a selection of gifs??? screaming and crying rn...
bonus edit: 88x31 button templates oh yeehaw besties https://web.archive.org/web/20000815200328/http://flamingtext.com/buttons/gen/88x31/
various websites ive found so far: https://web.archive.org/web/20041010183457/http://www.amazing-animations.com/index.php, https://web.archive.org/web/20041016083622/http://www.designandcreate.com/, https://web.archive.org/web/20000621001112/http://www.freestuffcenter.com/sub/graphicstop.html, https://web.archive.org/web/19991221194925/http://www.quickbanner.com/index.dbm?system=&id_token=&cat=General&size=2
https://web.archive.org/web/19991128111436/http://buttonxchange.com/make.htm, https://web.archive.org/web/19990826193416/http://www.gifart.nu/buttons.shtml, https://web.archive.org/web/19970106151651/http://www.kelleypc.com/archives/button.html, https://web.archive.org/web/19991004002031/http://www.station4.com/buttonfactory/ <- this last one has some great 88x31 buttons omg :3