Every year what to buy my parents & DH's parents is the hardest part of all my Christmas shopping!
We normally get them individual gifts & then a larger "together" gift.
They are at the point in their lives when they don't really "need" anything, & they don't really have a lot of hobbies. My dad likes to read, but I can only get him books so many times. Neither my mom or DH's mom likes manicures or pedicures.
In the past, when I've asked my parents what they want, I always get answers like "socks" from my dad. One year, my mom told me she needed a slip - like what one wears under a dress or skirt. She also likes slippers.
One Christmas, they said they needed a new coffee maker, so we got them that w/ some different coffees. The next year, Mom wanted a waffle maker, so we got them a waffle maker w/ some nice maple syrup & waffle mix.
DH's parents never give us any ideas when we ask.
We've done gift cards to Lowe's. We've done pictures of our kids in nice frames. We've done the "grandma" jewelry for our moms, but I usually save that sort of thing for Mother's Day.
One year, we did gift certificates for a nice restaurant in town & tickets to a play at our local theatre.
Another year, for my dad, we gave him a regional history book signed by the author.
DH's dad likes sweets, so, for his individual gift, we've given him some sugar-free chocolates.
Last year, as part of their gifts, we gave them "welcome mats" for their front porches, and the welcome mats were engraved w/ the names of everyone in the family. Both my mom & DH's mom said they were "too pretty" to walk on, & they both put them up somewhere never to be seen again. LOL!
We also had spent the week before Christmas in St. Augustine, FL, so we put together a gift basket w/ different things from St. Augustine - an ornament painted by a local artist & engraved w/ their names, local BBQ sauce, teas & spices from a local tea company, a local cookbook, coasters made from palm trees by a local craftsman, etc.
I have no idea what we're doing this year.
For their "together" gift, we may get them battery chargers for their vehicles - they're "smart" battery chargers which don't require jumper cables.