There are many ways to celebrate a 50th birthday for a woman, depending on her interests and preferences. Here are some ideas from various sources:

• Outdoor Activities: An outdoor brunch, outdoor concerts, or outdoor yoga and tai chi classes.
• Indoor Activities: A spa day, a wine and cheese tasting party, or a trivia night.
• Group Activities: A sunset sail, a wine and cheese tasting cruise, or a paddle and brewery tour.
• Themed Parties: A Back to the 80s birthday bash, a garden party, or a progressive, era-appropriate dinner party.
• Personalized Celebrations: Make a list of 50 things to do for the birthday, have a kidnap party, or create a home spa experience.

Ultimately, the celebration should be tailored to the womans interests and preferences, and should be a reflection of her life and accomplishments.