Help with obstacle ideas (2d game)

[MaddyRing (Redshift)]

Hello, I am trying to make a 2D game with obstacles
(i use isometric camera)

1. What do you want to achieve? Keep it simple and clear!
   Help with obstacle ideas
2. What is the issue? Include enough details if possible!
   Not sure on how to get good ideas like those 2D games / obby games have
3. What solutions have you thought of so far?
   I have 1 idea on an obstacle and its spikes but my game designing skills are bad so not sure if I can make good ideas
   
   

[Hagwheat (OogaBoogaMan)]

You could make a trap door that players would have to jump over to avoid.