Hi all! 
I’ll get right to it. My DB and his partner have 2 children together, my DNs (obviously!). His partner has 3 children from a previous marriage who I don’t see very often, and even when I do they don’t speak much, which is fine as some children just don’t like speaking to people. The ages are 11, 13 and 16. So altogether there’s 7 of them including DB, partner and all the children 
I also have another DB, his DW (my SIL) has a 17 year old from another relationship. Would I be unreasonable to buy both of my DBs children toys etc and get the others selection boxes? I don’t want to leave anyone out, but it does get expensive buying toys and other bits for ALL of the kids. Like I said, I don’t want to leave anyone out and I have bought both DBs step children (?) selection boxes, but I feel like it’s not enough and they’d be annoyed/gutted. 
I’ve still got time to pop out and buy them something more substantial, but it would be stretching the purse strings a little bit! AIB(an)U Grinch?