Ummm ... Is toytown a hint that your area is LEOstadt, or would you like to say roughly what part of Germany? And what age group are your kids -- toddlers, kindergarten, younger elementary, older elementary? Do they have any special interests?
I don't have all the threads about bilingual education bookmarked, as I'm not even a parent. But one ancient one I did bookmark was this one, because its name was so, er, cryptic. (-; But on the other hand, it's so old that the kids in it are at least teenagers now, if not having their own kids.related discussion: Irische Umgangssprache für Schnuller?
The other archive threads that might be better than nothing are the ones about children's books, poems, songs, videos, etc., which you might at least be able to get before the pandemic is over.
Another option might be a Zoom plan with another family, so they wouldn't actually have to live close by. If you would be open to that, at least in the short term, you might have more chance that someone here might know a friend or relative with kids interested in both languages.
Or even some of the older forum users without kids or grandkids of their own, many of whom are close enough to bilingual for the purpose, might be open to an occasional video chat over the holidays, just reading a story or singing a song or talking about things around the house or yard, just for a change of scene. Purely hypothetically, it sounds like kind of a nice idea, though I have no idea if it would really work.
Sorry, just brainstorming, probably mostly not useful, but just in case.