I have to jump through so many hoops to send cash to US comrades so I can't help with day to day stuff.
However - and you can tell me if I'm out of line here - have you considered creating an amazon wishlist on a burner account and sharing it here? That way you definitely get the specific goods you need without worrying about money management. Stuff like the sleeping bag and clothes you mentioned.
Can’t believe I’ve been practicing for interviews by ensuring I can demonstrate my knowledge of the subject material and am capable of meeting the requirements of the role instead of focusing on maintaining eye contact and improving my posture