Square watermelon in a square box...

Square watermelon does not look normal as we think the norm is round... but Japanese farmers had cultivated it by popular and logical demand because it saves spaces in transportation, easier to store and stack... and customers find it easier to put in fridge and to cut it. It is also easy solution to grow it contrary to first response : HOW TO GROW A SQUARE MELON!" Just put it in a square box when it is growing is the solution.
So, being Square have an advantage. So we brought some square cube boxes which can multiply the effect of using as a costume jewellery box and a gift box for whatever stuff you can put it in. This is a good solution assuming your range of gift or product does not have a fixed form that specifically needs a box of certain shape and sizes.

These boxes are in dimension of 9cm x 9cm x 7cm height. Now available in 7 colours of Silver, Skyblue, Gold, Dark blue, Maroon, Indigo and the Pink in the foreground which showed the interior. The interior is also good stuff, laced with a white satin cloth, gifts are cushioned to give a coveted look. These boxes are also matched with a relative coloured ribbon on its cover to denotes a gift signage.
The price is also relatively sound at S$2.20/each. Consult this author if you need customise colour, bulk discount and printing of words on its cover. We will think of a solution just as the watermelon farmer done their.