Donating ~half of my remaining regranting funding ($25k). While this is not in the category of things I wanted to fund with the regranting pot (i.e. individuals working on scheming research), I think Lighthaven is worth supporting.
My main evidence is that my MATS scholars really like it and when I've been at Lighthaven for conferences or other meetings I thought it was a great venue.
One caveat is that I think Lighthaven should be funded through institutional donors rather than many small grants due to the obvious overhead considerations and large funding amounts. Though, in the current situation individual donations seem obviously better than nothing.