Ideas for a 50th birthday party include having a destination party or hosting a party that describes the honoree's life through the years. When choosing a destination party, consider places where the guest of honor has always wanted to go.
To throw a party that looks at the guest of honor's life through the years, have each guest fill out a questionnaire. Questions can include "my favorite thing about [name] is..." "[Name] drives me crazy when he..." and "My favorite story [name] has ever told me is..." Share the results with the party and the birthday person. This can lead to new stories people may not have heard before. Results can be read aloud or posted on a slide show with photos that play during the party.
Other ideas include decorating using 50 items. For example, the host can string a clothes line around the party room, and hang 50 pictures of the guest of honor. Guests can contribute pictures to the host to reach the number of pictures. Fifty words describing the birthday person can hang from the ceiling or a table can be filled with 50 framed photos of important moments of the birthday person's life. Fifty balloons in a favorite color can welcome guests at the party entrance, and a playlist of 50 favorite songs across the decades can be played.