Here’s a list of essentials for a birthday party:

Planning

1. Guest List

2. Invitations

3. Theme (if applicable)

Venue

1. Location (home, park, rental space)

2. Seating (chairs, tables)

3. Decorations (balloons, banners, tablecloths)

Food & Drinks

1. Cake

2. Snacks (chips and dip)

3. Main dishes (pizza, sandwiches)

4. Beverages (soda, juice, water)

5. Utensils (plates, cups, napkins, cutlery)

Activities

1. Games (party games, outdoor activities)

2. Music (playlist or speaker setup)

3. Photo booth (props and backdrop)

Party Favors

1. Goodie bags

2. Small gifts or treats

Miscellaneous 

1. Candles for the cake

2. Table decorations

3. First aid kit (just in case)