Our school has TONS of School spirit, so Pep Rallies are always tons of fun! We jam more than 2000 kinds in our gym! Oce everyone is seated, the drumline plays our school's cadences, the cheerleaders get up in two lines and do this super easy step (Clap Clap Clap Clap Clap, arms go down, arms go up -repeat) then all the members of our seasonal teams will walk down between the two lines of cheerleaders & drumine w/ a large banner while somone announces the group (Like football, tennis, etc)...
after that, someone (usually a jr or senior) will welcome everyone to the pep rally - they say whatever they need to say - then the principal usually talks (our school LOVES our principal!) - after that we have each group of cheerleaders do their routines (Well, they're less of cheerleaders than they are skanky *****s at my school, it's really sad), the Dance team and the Steppers will also do their thing... The Cheerleaders of each grade will lead each grade in their "school cheer" (if you're a senior this year, it would be "2 - 0 - 0 - 4! We're the class of '04! Gooooo Falcons!" that or the typical "Seniors, Seniors" *clap clap clap clap clap* repeat)... Sometimes they make a video and project it onto a big screen... we hired a group of AMAZING tumblers to come to our last pep rally... we've done tons of cool stuff!
For HOMECOMING week, we have an ongoing competition between classes - they're judged on things like painting the courtyard windows, painting the windows downtown, a choreographed dance, and then they do random games during the assembly (like who can chug something fastest, who can eat something fastest, etc)... so each class gains points all thru homecoming week - SENIORS always always always win, then it's a mixup between the fresh/soph/jrs...
We have a "Monday Night Dance" Which is a pretty casual (Maybe a cute skirt & shirt) dance, it's just for a lot of fun, and that's where the choreographed dance is performed
Friday is the homecoming football game, no suprise there!
Saturday night is the Homecoming dance... We've had themes like "A Moment like this" "I can show you the world" "Mardi Gras" "All that Jazz" Just cheesy stuff like that!! (I'm not a big dance person, i've only been to turnabout & Prom)
Anyways, that's about all i can think of!! I hope you can get some ideas!! School can sort of be fun if you want it to be!