I think it really depends on how close you are to your nephew and your Sister or SIL and brother or BIL. I think $100 is an appropriate amount for high school graduation.
For me it when it comes to baby/wedding showers it depends once again on how close I am to the person. If it is a close friend then easily $100 otherwise more towards the $50 or $25.
Re: high school graduation present ?
I think it really depends on how close you are to your nephew and your Sister or SIL and brother or BIL. I think $100 is an appropriate amount for high school graduation.
For me it when it comes to baby/wedding showers it depends once again on how close I am to the person. If it is a close friend then easily $100 otherwise more towards the $50 or $25.
Ditto PP- I would think 100 is appropriate for a family member.
For baby showers of friends that arent terribly close I spend 50. For weddings we usually dont give less than 100 pp assuming we attend.