The Canadian government is currently matching donations to the Red Cross:

The Ukrainian Canadian Congress: Ukraine Humanitarian Appeal is also fund-raising for food, medicine, and shelter:

The Ukrainian Congress Committee of America has also partnered with the Association Internationale de Cooperation Medicine to support humanitarian relief efforts:

The Central European University gives information on how to help displaced students and scholars: here

Tom Grusiecki has compiled a document with more resources for displaced scholars and students: here.  This document will be updated.