The following link provides charities working to provide assistance to Ukraine.
These are my personal favorites:
(1) Lutheran World Relief
(2) Doctors without Borders
(4) Catholic Relief Services
(5) International Rescue Mission
(6) Mercy Corp
(7) Save the Children
(9) International Committee of the Red Cross
I like to donate to the International Committee of the Red Cross, instead of the American Red Cross, in hopes that my contribution will go to help Ukraine.