One way that you can support anarchists in Ukraine is by purchasing Mother Anarchy:
A benefit album to raise money for anarchist and anti-authoritarians defending their communities against invasion in Ukraine, specifically the Committee of Defense affiliated to the Black Headquarters. All proceeds of this compilation will go to the Dresden Anarchist Black Cross, which is coordinating aid to these comrades.
Even if you can’t afford the $8 price tag right now, the music is still worth checking out. Defiant, somber, irreverent, and radical, Mother Anarchy spans borders, languages, and genres alike.