Final answer:
The provided text does not specify what strange gift Isabel receives from the shop worker; additional context is required for an accurate response.
Step-by-step explanation:
The strange gift Isabel is given from the shop worker doesn't appear to be clearly defined within the provided excerpts. The text hints at various unusual or unexpected items being gifted or found, such as a chatelaine watch, a box of toys, or a dead bird. However, it does not explicitly mention Isabel or the specific gift she receives. To answer the question accurately, additional context from the source material would be necessary.