To do this, you'll need some fruit, but avoid using anything too juicy, like peaches or plums. Citrus is ideal because it has a thick skin that keeps the finished product fresher. Both apples and oranges ended up giving off a great smell. Unfortunately, the yummy smell only lasted a couple days and then the apples started to rot. Maybe because Florida is so warm and humid, even in the winter, but I was disappointed when after only a couple days, the apples seemed to be attracting fruit flies. I read something that purported the exact opposite would happen, that the cloved fruits would keep flies away.
A quick note about their name, cloved vs cloven. Cloven is the condition of having split hooves, like a goat. Cloved is the condition of being studded with the little dried flower blossoms that are cloves.
You'll need the fruit, of course, and the cloves. As for hardware, you'll want a pen, something sharp & pointy (I used a corncob holder), possibly a thimble, and finally a length of ribbon or something to hang it with (I arranged these all together with a couple leftover fruits on a dish & put it on the table for a centerpiece).
Draw your design on the fruit with the pen. Try to remember to leave a place where the ribbon will go.
Use your sharp & pointy instrument to trace the pictures with little holes. Do only two or three holes at a time to start with until you know about the size each clove will require.
Use your thumb (possibly covered with a thimble, cause this starts to hurt after awhile) to press the cloves into the holes. Sometimes the flower bud will break off. I used these for stuff like the feet, beak and eyes of my owl or the center stem of my leaves.
This was even fun for my six-year-old to do. He drew the design, I helped poke the holes, and he did the cloves. Ensure the cloves are pressed far enough into flesh so they won't fall out. Our fruit became a bit withered and the cloves started to seem to come out anyway; I pressed them back in on the third day, but by about the fifth they needed thrown away.
Final verdict: don't bother unless you only want them for a day. I wasn't even going to post this, ha!