If you enjoy relaxing and doing some drawing and painting, you can do this 3D using Tilt Brush.

Has a fun tutorial if you want an introduction to the VR controllers.

The Lab includes Postcards
Visit exotic, far-off locales from the comfort of your own head and toss the stick to the robot dog.
The Lab includes Human Medical Scan
Explore the intricate beauty of the human body through a highly detailed model created from a series of CT medical scans.

In this VR experience, you will be transported to a forest, with options for day or night (flashlight).

An immersive meditation application with 27 different environments to escape into.
Available: Steam Store

Casual game with a soothing, organic atmosphere wherein the player's objective is to grow beautiful flora.
Available: Steam Store

Players use their teleport function to take a virtual walk through fifteen themed environments complete with calming nature sounds.
Available: Steam Store OR Oculus Store

Color Space is a virtual reality coloring book, granting the player the ability to color the environment they're in.
Available: Oculus Store

TRIPP is a mindfulness app that goes through guided breathing takes the player on a tour through a captivating experience. Premium version with more features is available.
Available: Oculus Store