Hi! Today it's my birthday and it was important for me to do something...luckily at least a friend could come with an excuse for a short visit and we had cake together and a video call with our other friends. You could have a virtual party too. Maybe if nobody can come at your home you could plan that everyone will have a dessert at home and you can eat it together during the call? Or with a hot chocolate or something nice to drink. Just to have a party atmosphere. And then you can just spend a relaxing day doing something nice.
Hope your birthday goes well