suggestions for marking special day?

This Saturday is my wedding anniversary.  My marriage is on the rocks.  I don't want to do anything on Saturday that is couple related nor could I if I wanted to, given that my husband will be gone, at his parents' home, as he is every weekend.  My husband probably won't call or anything.  That's OK, too.  What I want to do is something to celebrate me and my strides toward greater maturity and independence.  Any ideas?