both iCalβ and Iβm a big fan of multiple shared calendars. I have one with my sister, my mom, my partner, my bestie and one for myself. really helpful organizing plans with people and keeping track of far out dates like vacations and concert tickets.
paper planner- for weekly and daily todo lists. finding where i can fit in x3 things to do daily based on what time allows for that day. and of course adding stickers and doodles with pretty markers. I use one from Shorthand.