The phrase "a small package in" is correct and usable in written English.
It can be used when describing the location or context of a small package within something else, such as a larger container or a specific area.
Example: "I found a small package in the corner of the room, hidden behind the bookshelf."
Alternatives: "a tiny parcel in" or "a little bundle in".
"The challenge was to get long-term data from a small package in a very harsh environment," he said.
In broad daylight and directly in front of the library, a homeless man in a wheelchair hands a pair of $20 bills to another, receiving a small package in exchange.
The other day, Kufow Ali Abdi, a destitute herder who lost all his cattle, trudged out of Banadir Hospital, gently carrying a small package in his arms wrapped in blue cloth.
In Texas and Pennsylvania, for example, a private express carrier left a small package in the recipient's mailbox.
I was about five months pregnant with my daughter and in between regular bouts of vomiting, when my mom came over for a visit with a small package in her hand.
Administration officials vowed to push for a smaller package in the conference committee.
Fitting a disproportionate interest in humanity and a high decibel level into a small package came in handy as the World War II inside riveter in the nether regions of B-24 Liberator bomber tail sections.
He took his cart to the door of the store, where the boy handed him a small package wrapped in newspaper and tied with white string.
Finally, a retractable model fills out the new line, hiding a 3 foot charge and sync cable that remains coiled in a small package when not in use.
Still, having Hulu's full catalog available in a small package will do in a pinch when you're lazing about on the couch and the remote is just a little too far away.
The hybrid systems do not need to be polished or presented in a small package as they do in passenger vehicles.
