A charity that I make blocks for (Covered in Love) just partnered with Give Back Box to help reduce our shipping costs. You can fill a box with 70 lbs & send it UPS for $15.
If your particular charity is not a partner yet you can contact them at
[email protected]
I like the idea that the return address on the label is not your address but instead, it is the address of Give Back Box. So if the box is not delivered it goes back to Give Back Box & they see that it gets to your designated charity.
Here's the link if anyone is interested:
https://givebackbox.com/index