Final answer:
Grandma Nini likely felt ecstatic finding the paperweight because it held sentimental value to her, associated with personal memories or past experiences.
Step-by-step explanation:
Grandma Nini was ecstatic to find a frog-shaped ceramic paperweight in a secondhand store most likely because it held sentimental value to her. Looking at various texts, items of personal significance, whether because they are part of a collection, hold historical significance, or are appreciated for artistry, often become cherished due to the personal memories or feelings they evoke. The attachment to such items can be strong, particularly amongst older individuals who may associate certain objects with experiences, people, or bygone eras of their lives, making them precious beyond their intrinsic value. An example is the old pitcher that Old Grannis clings to, which he values despite its lack of practical use. Another is Maria's imagined or remembered opulence, which may never have existed but is very real to her due to its association with her past.