Ah! Congrats to your family – even if it’s a formality, it’s still such a fun milestone. Some of my ideas –
1) Membership to a wine/beer/champagne club if they drink/like a certain winery or kind of wine. My favorite winery in Napa, Clos du Val always has really nice selections and make for a really nice night in.
2) Weekend package for hotel/dinner/spa treatment or activity as a “honeymoon.”
3) Inexpensive and kind of cheesy – but the digital picture frames that multiple people can upload photos directly to – my sister lives in AZ and we got her one since she’s not with the rest of the family and it’s so fun to surprise them with pictures. Now I want one! You could pre-load it with pics of your family through the years if you have photos!
4) Fishing boat accessories? IDK what that would include but I’m assuming there are fun gadgets that could trick it out? LOL
Let us know what you decide on! xo