The phrase "capsule for" is correct and usable in written English.
It is usually used to refer to a time period or a period of intense activity. For example, "The past year was a capsule for rapid growth and success."
But it is not a time capsule for just him.
So this is like a time capsule for me.
It became a time capsule for fans who refused to let the band's legacy die.
Someone could also climb into a ball-shaped capsule for the ride.
The embryo lives in that capsule for a long time -- anywhere from 6 to 30 months".
The National Archives removed the Twinkies from the capsule for fear of attracting _________.
We need your help to create a photographic time capsule for these children.
A few years ago I designed a sleeping capsule for a hotel.
There's only room in the capsule for one of your movies.
They decided not to jettison the retro rockets after they braked the capsule for its descent.
"I wanted 'Easy Rider' to be a time capsule for people about that period".
