You could decorate your house/garden and ask others around you to join to get that street party feel.
Dig out the bunting pop up some balloons whatever you have to hand. You could always try to fill your time by hand making decorations.
How about a garden picnic ?
(sticking to the government rules of distancing)
I will pop a few cake recipes on here for you to try.
Recipes from bbcgoodfood.com