Need advice.. Estranged father.

This may get a little ranty so sorry. This morning I checked the mail and there was a card from my estranged father with a $200 Target gift card in it and idk what to do.  The whole thing about my father is he was never around when I was growing up, parents divorced when I was 7 and he lived cross-country. As i came into adulthood I saugt counseling to understand the situation with him and came to the realization about the person he is.  Things really starting going downhill about 3 years ago for him and he had already burned alot of bridges with our family and I was pretty much the only person he really talked to. He made some poor choices out of desperation that landed him in jail, where I was left to clean up his mess, again. I had him evaluated in jail and when they told him I petitioned for it he basically told me to F off. He ended up in a halfway house/homeless shelter. He told me off twice more over the next 3 months and I had just found out I was pregnant (I didn't even tell him someone told him idk who) so I made the choice to cut ties with him because I needed to focus on my family. So I sent him a letter and told him and I haven't heard from him since (almost a year ago). So then I get his card from him with the gift card (who knows where he got the money he had been fighting for disability for a year). Idk if I should send it back? Keep it and not say anything? Idk what to do because I told him I didn't want anything to do with him anymore.  And someone had to tell him about my son. I still don't want anything to do with him, I just don't know how to handle the card.