Grandparents keep things. A piece carrying their grandchildren's names is worn far more often than anything bought for style.
What works
Name pieces with grandchildren's names — the most given gift here
Photo jewelry and keychains — a picture carried daily
Simple engraved bracelets — for a grandfather who wears little
Choosing for an older recipient
Favour easy clasps, adjustable chains and lighter pieces. Fine chains can be hard to fasten; a bracelet with a sturdy clasp or an adjustable slider is kinder.
What to write
Use the grandchildren's names and birth years. It dates the gift in a way they like.