Preserving leaves

Here are some native maple leaves I gathered when I used to live in Florida. There's quite a bit of variation in both shape and color to the leaves. Do you make pressings of leaves? Do you frame them?

Apparently folks dip them in glycerin or coat them in wax.

How do you preserve leaves, do you use them? Reflecting back on these leaves made me think of this idea. Something fleeting and simple from nature to enjoy.