I bet World Market or Pier 1 has something you can use.
Good idea.
If you like doing craft work, maybe you could do this:
Get two identical carved wooden boxes, about 6" long inside.
Glue these together, bottom-to-bottom.
Glue craft felt pads to one end of the boxes: two small pads, one for each lid and then one large pad for the bottoms which are joined together.
Stand the joined boxes on end, felt pads down. The lids will open like a book to give access to the inside.
You could also hot glue some strips of elastic band across the inside to hold the
juice bottles in place.