I recently had an update email from Eventbrite, and amongst the articles was one with ideas for COVID-19 friendly activities. On their list is outdoor events, family events and events that involve the delivery of merchandise.
Perhaps you can use or adapt these ideas for your fundraising?
I recommend that you have a look and if you are not currently an Eventbrite user, please remember that it is normally free if you are not charging for the event, and it integrates with payment gateways and other apps such as Zoom.