I am on email lists for both the Old North historical site and the congregation. Both have been requesting funds of late.  The Foundation (dealing with finances of the historical part) has of course been hit hard because the buildings (church, Clough house museum space, gift shop) are closed to tourists and school groups, and the enormously lucrative Lantern Service is being postponed until the fall (tentatively).  It is possible to donate to the Foundation online.
      The Old North (Christ Church) congregation has asked regular pledgers to mail their checks in as soon as possible, and they of course are getting nothing from visitors who would be giving money via the plate during services, so they are asking for donations by mail as well.  They have also set up a drop box for members in the neighborhood to use instead of the mail, if desired.  Possibly they will get around to arranging for online/electronic donations.  It seems from the Church of the Advent web site that they are accepting donations online in addition to asking for pledging people to mail in checks.
I have donated to Old North as a private individual in the past. I emailed to ask whether they are still paying the part time educators. The
answer is yes, all employees in both divisions (even the ones that aren't going to work in the buildings) are being paid now. Other folks are working - they are producing services
viewable on YouTube at https://www.youtube.com/channel/UCoRTXPfJAPDwGFMpMqFspOA
Tim is doing maintenance projects. (and the skilled window restoration folks are still doing two windows at a time).
I am going to give again as myself, but there has been some discussion about whether we as a guild should also donate to each church
(or in the case of ON, partly to the congregation and partly to the foundation?). Opinions?

Laura Dickerson