Is there a term for an intentional, pleasing juxtaposition of elements?

I made a paper plane out of airplane documents.

There’s something satisfying about combinations like this, but I’ve never been able to locate a word that captures the concept:

• It has the same feeling as irony, but there’s no contradiction;
• It’s like serendipity, but with no luck or chance as it’s an intentional combination;
• It’s like coincidence or synchronicity, but intentional instead of accidental

Is there a single word for this? The closest I can describe is "a satisfying juxtaposition", which doesn’t have the right feel to me.