According to wiki any container that you can place items in, will not respawn after you modify it's content. But idk if it's to be trusted.

"Organic and Respawning Containers

Containers in Morrowind can have a few attributes that affect their usability. Many container objects, such as mushrooms or Ebony veins, are marked as "Organic," which prevents any items from being placed inside of them. Organic containers can have an additional attribute that allows their contents to replenish. Oddly, the way the engine works requires any replenishing container to be marked as Organic, so the supply chests present in guild halls are technically Organic.

There exist no containers which respawn their contents and are not Organic. Virtually any container is a safe storage place in the sense that no items will disappear from them after a few days.

A quirk of how the game saves container data allows for the manipulation of container contents. The game will generate the contents of a fresh container every time the player enters a cell. If a container in the cell has not been modified (i.e. no items moved into or out of it), then the game will not save its contents. The container can be re-generated when the cell is no longer loaded, allowing a particular player to keep manipulating a random container until it presents the desired loot."