Rename some chests with an anvil (you can rename anything that has an openable inventory).
Then place the renamed chests, open them, and they'll get added to your memory and never cleared.

Steps to Reproduce

1. Open Minecraft win 10 edition.
2. Open task manager and pinpoint Minecraft win 10.
3. Start a new single player world.
4. Rename 9 chests to all unique names.
5. Place these 9 uniquely named chests.
6. Open one, watch your memory jump ~10mb.
7. Close the chest, notice your memory doesn't go down 10mb?
8. Open another one, +10mb more ram.
9. Repeat till out of memory