How to make inventory appear in any place in VR?

Hi!

So, I want to have a inventory system in VR. I have an idea how to get this right, but for one thing I don't know how to do this. I want my inventory to be a game object. This game object needs to appear when I press the B button on my right controller. It needs to disappear when I press on the A button on my right controller. Also, I want this object to appear every time a few meters for the player, so the player is always able to see the inventory at any place and any moment. Can someone help me with this or give me a tip in the right direction? It would help me a lot!