pizza? flowers? a card?
Also, what’s the phrase in english for support and encouragement to keep going when someone is going through a difficult time? In chinese say “加油” (literally: add oil ie. add fuel to keep going) or in french we say “courage”, don’t know what the phrase is in english.
Offer to have a gaming session if that is something you both do. It’s low commitment (they can bail at any time easily), shows you care, and helps take their mind off it while having fun