The largest one looks so great I would put it in its own pot, and bonsai-style would definitely suit it.

I agree...I would use a bonsai pot for at least one of them. I personally prefer single plants in a pot...but multiple plants in one pot looks great too, so I have both...Can't go wrong either way :o)

I agree, I would go with the bonsai pot for one, and the other two in separate pots. Like Nancy, always prefer one plant per pot.

Christopher

I would pinch and remove the lower leaves to show a bit of trunk

I had 3 hobbits in one 6" shallow pot, and they looked fine at first. But hobbit leaves are thick and my plants stayed bushy. Soon my dish looked like a mound of green leaves with no definition between the plants. I separated them into individual pots, and I'm much happier now. I didn't remove any lower leaves, and that may have been the way to keep them looking good in a single pot. Just my opinion. I'd love to see what you decide to do.
Lennie in MIchigan

If you had a very large bonsai pot/dish -- 10 inches (approx. 25cm) in diameter or larger -- I would consider doing a mass planting. However, being as I know what sizes of bonsai pot you have (unless you recently went out and bought a few new ones beyond the ones I gave you), I would only put the largest one in a bonsai pot at this time. As Sam mentioned, remove a number of the lowest leaves after doing so to give a bit of visible trunk.

For that matter, depending on what your Hummels look like, you might want to bonsai one of them too.