This data pack allows you to make simple portals like the ones found in the game portal and portal 2.

To craft the portals, you just throw down an ender pearl and a blue dye for the blue portal and an orange dye for the orange portal. These will give you special snowballs that you can throw somewhere. A portal spawns where it lands.

To remove the portal you simple have to throw a tnt in it. You will get the tnt back as well as the item to respawn the portal.