After an extensive search, the only reference to these that I managed to find were, as you mentioned, listed as a goof, that simply states
Items on Ben's table as he watches the hologram.
There is no direct reference to these items anywhere else I can find, and even this description is vague, possibly referring to there being 3 items in one shot, then only 2 in another.
Outside of this, any other description could only be speculative; as rs.29 mentioned in their comment:
Considering that Episode IV was filmed in Tunisia, and whole first part of the movie has this distinct desert aesthetics, I don't think there is much more significance then usual Arabic tea utensils. They simply match the atmosphere and tone of the movie, and serve no special purpose in SW universe.
This is common in scifi and fantasy movies, to make the atmosphere more "real", by simply filling it with items that fit the atmosphere, and serve little to no other purpose.