/lit/ - Literature

DAILY RITUAL FORMS:
Daily rituals for Cultus Deorum Romanorum
http://www.novaroma.org/nr/Daily_rituals_(Nova_Roma)
https://hellenicfaith.com/household-worship/

Some examples of prayers adressed to the Hellenic Gods
https://athenaswisdom22.wordpress.com/hellenic-rituals-2/hellenic-rituals/

Reconstructionist friendly rituals for Celtic polytheism.
https://www.magcloud.com/browse/issue/1048997

CALENDARS:
Religio Romana
http://www.poesialatina.it/_ns/Latino&Javascript/DataRomana.htm
Hellenism
https://www.hellenion.org/calendar/
Celtic polytheism
https://time-meddler.co.uk/dynamic_celtic_calendar.php
NOTE: as highlighted by user @foxmulder this is a questionable calendar because the Celts and the Germanic peoples considered a day to start on sunset, not at sunrise, hence the real dates would be split.
Norse
http://norroen.info/calendar/script.html
https://time-meddler.co.uk/the-old-icelandic-calendar/
Maya
https://maya.nmai.si.edu/calendar/maya-calendar-converter
Aztec
https://www.azteccalendar.com/
Egyptian
https://planetcalc.com/8434/

WHERE TO BUY IMAGES OF THE GODS FOR YOUR RITUALS:
https://123statues.com/
https://jelldragon.com/collections/norse-god-statues/
https://www.celticjackalope.com/product-category/statues/celtic-goddess-statues/
https://www.wulflund.com/sculptures/europe/bohemia/