Decorate your front yard and encourage neighbors, family and friends to do a drive-by party with lots o honking, waves and maybe even bubbles!
Decorations all over the house - streamers, balloons, posters
Host a Zoom Party where everyone can sing "Happy Birthday!"; you can even play games during the video call.
If you're hosting a virtual party via Zoom, consider adding in a scavenger hunt where attendees race around their homes to find specific items; the first person back on screen with the item receives a point.
Have a baking competition
Chalk the driveway
Go camping by pitching a tent inside (or out!)
Get old school with games like Pin the Tail on the Donkey or bobbing for apples
Have family and friends mail cards/gifts ahead of time; you could then hide the items around the house for a day-long hide and seek challenge
Depending on their age, host an online video game tournament, i.e. Minecraft
Change your routine - have breakfast food for dinner, set-up a fab picnic lunch in the family room
Netflix Party (download the app)
Spa day .. face masks, massages, paint each other's nails while listening to awesome music
Give back - drop off non-perishable items at the local food pantry