I like Pinwheels to celebrate the wind of the Spirit at Pentecost. Conversation while making them can be about how our words (witness) is like the wind spreading the good news! Pinwheels can be made by families using materials they probably already have at home, or can get easily (use pencils or straws instead of dowels). Pinwheels can be made in quantity and distributed to friends and neighbors. 

You can find lots of instructions for making pinwheels online, as well as a variety of videos, including this one:

Pinwheels can be decorated while the paper is still flat -- either flame colors as another reminder of the coming of the Holy Spirit, or with Bible verses and messages of love and encouragement for friends and neighbors.

Another great suggestion for families celebrating Pentecost at home is a campfire (or cookout) -- with toasted marshmallows, of course! Acts 2 (or a children's storybook Bible retelling of Pentecost) can be read, and then those gathered can talk about what it means to be part of the church family, united by Spirit even when we are separated.

The church could drop off kits with marshmallows and long metal skewers as encouragement for families to gather and remember the fire that lit the Church.

This idea would also be fun for families to gather with neighbors or church members who live nearby in communities where stay at home orders have been lifted.