I took some Lilac cuttings today. Hopefully they will root, and then I'll bring some to the swap in the fall!
I followed some directions I found through google search - took cuttings from new growth, about 8 inches long, cut at angle, and put root hormone on stem and around the leaf bud areas, and put about half of stem into sandy potting soil mix.
If all goes well, they should root in about 30 days or so. Wish me luck!