I'd recommend either contacting them directly and asking, sending a check with the "to" section left blank, or otherwise just sending a letter with some cash well-hidden. If you take the last option, make sure to send it so that an unsuspecting monk won't have to accidentally come in contact with the money itself when opening it.
Gain and loss, status and disgrace,
censure and praise, pleasure and pain:
these conditions among human beings are inconstant,
impermanent, subject to change.
Knowing this, the wise person, mindful,
ponders these changing conditions.
Desirable things don’t charm the mind,
undesirable ones bring no resistance.
His welcoming and rebelling are scattered,
gone to their end,
do not exist.
- Lokavipatti SuttaStuff I write about things.