SpiralPath Designs, DeviantArt.com
Lugh is the God of craftsmanship. Often pictured as a blacksmith, he was also a wheelwright (he made cart/carriage wheels), a bard (a storyteller), a builder, and many other skilled crafts. I'd call him the original Jack-of-all-trades...maybe we should call it Lugh-of-all-trades? Lugh is the deity you call on for help and guidance on any craft from art to woodworking, architecture to building.
Statue of Lugh
Being the harvest of grains, the foods of the holiday tend to be breads (sorry GF people!). Our celebration included corn bread, fresh strawberries - blueberries, raspberries, etc are excellent too, and our "slaughtered cow". Since it is the 21st century (and I live on a dairy farm) we didn't ACTUALLY slaughter a cow, we just took some meat from the freezer and cooked it in the crock pot with wine and herbs (also a seasonal foods).
Traditionally, Lughnasadh is celebrated by hiking and/or visiting springs and streams. We celebrated by hiking to Brunswick Springs. We brought our feast as a picnic and did a small ritual.
There were many visitors to the Springs while we were there and we were able to share the story of the Springs with them as well as hear their stories. P.S. I'm not speaking in the royal "we", I celebrated with a friend.
This is also a great time of year to work with other Pagans. Many groups offer festivals this time of year. I'm lucky enough to have two active groups within a couple of hours of me that both offer a Lughnasadh festival during the first weekend in August.
Templefest is put on by the Temple of Witchcraft located in Salem, NH. They are a very active group and have a regular listing of events on their website. One of the co-founders is Pagan author/teacher Christopher Penczak.
Laurelin Community of Bethel, VT, also offers an annual Lughnasadh festival as well as a monthly meeting. I sporadically participate with this group. (Sometimes I feel like a group, sometimes I don't.) They usually offer a variety of activities, workshops, and merchants. Founder is Pagan author/teacher and man of many skills, Kirk White.
God Checker: http://www.godchecker.com/pantheon/celtic-mythology.php?deity=LUGH
About Religion, Lugh: http://paganwiccan.about.com/od/godsandgoddesses/p/Lugh.htm