Gift for the whole family?

So money is tight. We decided on one gift. Partner said a calendar but I forgot about my neices and nephew. I normally get them toys but this year I have my own baby and im not working.

What's something I could gift them?

My sister and brother in law have a 8yr old, 5 year old (neices) and a 2 y year old.

Is it possible to get them a family gift for Christmas or at least one toy/game for the kids?

Any suggestions