Personal Dimension

A 1×4×2 Portal, that creates a small, personal Dimension, where you can experiment and be safe from monsters. I suggest, the dimension is about 9 chunks large, with bedrock floor. Each portal should create a small, 9 chunk world, in which you can do whatever you want. This would support a great variety of possibilities and let you visit hundreds of your creations from your own house. It is a great way to have fun with other players, and I think, that everyone would like their own, small building space.