The SOI has a lot of illustration-related events, but my favorites are the ongoing sketch nights. There’s music, food, original images by some of the best illustrators who ever lived, the SOI bar, and 3 hours of life-drawing. Tuesdays are nude, Thursdays are more costumed. It’s $7 for students and $15 for the rest of us. 6:30-9:30, but come early if you want your choice of seating.