Post each poster up the day before so students know what is coming next.
A variety of fun days included; Can be used as an ABC countdown; However, in 3rd grade we only do a 10 day countdown due to end of year testing, etc. Pick and choose what you want your students to do at end of year.
A few examples
Extraordinary Fun Day
LOL /Jokes Day
Bubble Gum Day
Furry Friend Day
And Many Many More
Add your own or message me and I will add what you need