The Canadian government is currently matching donations to the Red Cross: www.redcross.ca
The Ukrainian Canadian Congress: Ukraine Humanitarian Appeal is also fund-raising for food, medicine, and shelter: https://www.ucc.ca/
The Ukrainian Congress Committee of America has also partnered with the Association Internationale de Cooperation Medicine to support humanitarian relief efforts: https://ucca.org/
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.