Wedding Anniversary Next Month

My husband and I will celebrate our 15th anniversary next month!  I can't believe we've been married that long already!  My son asked us when we were going to renew our vows.  I'd love to look at men's rings and plan a vow renewal with the dress and party but we just don't have the money. Maybe when my stepkids turn 18 and child support stops, we can set aside a few months worth of what would've been child support and renew our vows.  There's an idea.  We can celebrate the end of the legal relationship with the ex and renew our vows in one big party!