Experiences outlast objects. Build the gift around what they love.
A cooking class, concert tickets, a museum membership, an art workshop, an experience is a gift someone talks about long after any object would have been forgotten. It gives a memory instead of a thing, and memories do not clutter a shelf or go out of style.
The key is knowing the person. Build the experience around what they already love, a bat mitzvah who bakes, a couple who travels, a friend obsessed with live music, and the gift becomes proof that you actually see them. That attention is the whole point.
For milestones especially, an experience can become a shared one: take the person along, and now the gift is time together, which is the rarest present of all.
The bat or bar mitzvah with a passion, a wedding couple, or a friend who has enough stuff. Best when tailored to a specific interest.
Local studios, venues, cultural institutions, and class marketplaces. Or simply book the thing they already love and hand over the tickets.