Trapped

well i have decided to make a adventure map, i plan to make 1 room per day for several weeks making a adventure map full of challenges,
you start off in a chamber where your informed of where you are and you have to complete sets of challenges to move on to the next room
i have only just started and have made the introduction room and the layout of thee first challenge, i plan to set out almost 30-40 rooms full of different and difficult puzzles
some support would be nice since i tend to give up on things if the task is too big.
ok i have finished rooms 1-9 1st room is the simple walk through 2nd is a parkour to test the player 3 room is a mob arena, and the 4th room is more of a story adder but is a sprint test. now ideas would be nice on the next few rooms as i am running out of ideas, i don't want to be making harder versions of levels before half way D:
but yea ideas would be appreciated and ill give you credit if i use your idea
i have posted a incomplete map (only 15%) but it gives a brief indight into the adventure map im making, the map stops at a fight against a witch, so feel free to go into creative after beating the witch, everything is automaticly done so no need to set the time or change the difficulty when its required
i also added a easter egg that is in the second room but needs to be unlocked from the first room