How close are you to the parents? Could you ask them?
Alternatively - a toy for young child,books,vests/babygrows,voucher for boots (a lot of shopping done there) I also got a thermometer for the bath (great present if they don't have it),memory box,digital thermometer for scanning head and ears.
What we didn't use was the comforter (got 9) also a lot of blankets again used about 2 as we had our own and the rest got sent to charity shop...