The phrase "cute keepsake" refers to a small, adorable item that someone keeps because it holds sentimental value or reminds them of something special or important. Full definition
This can make a cute keepsake and is sure to provide laughs. (thespruce.com)
It is something that can be done easily with supplies you likely already have and it makes a cute keepsake, Halloween card or little gift to send to a distant relative. (web.kidsactivitiesblog.com)
Reindeer Footprint Christmas Card from Emma Owl — This would be such a cute keepsake, especially for young children (reallifeathome.com)