ITT.

We're playing factions/mcmmo on an otherwise vanilla 1.7 server and I've already sunk about 30 hours into setting up the wheat/pumpkins/melons/cows/chickens.

Short of spelunking, I need build ideas that she can help me with.

I've built so far:

hotel w/ furnished rooms for friends
library w/ enchanting room
restaurant
multi-level greenhouse for pumpkins/melons
a forest with a unicorn
animal farms



Ideas so far:

Railroad.. something?
Castle walls (cuz factions)
Sky castle
Send her out to hunt endermen lol but I don't know if the end is scripted yet.

Auto-storage unit (Assuming it's allowed. May not be best idea if griefing is allowed).
Horse race track
Slime farm?
Maybe easy to repair mini games (Plenty ya can look up, although plugin ones are a lot better. Could suggest a separate world for them if the owner is easy to get along with).

Is there like an easy tutorial for some kinda rollercoaster/racetrack/water slide involving redstone?

I built boat docks at either end for her to go off and explore with cuz she's always destroying boats. I had an idea to build a village around us as well.

I need redstone stuff now.