Hi, Martina!
Hmmmm. This is a tough one. $5-$10? I'd suggest looking through a high-end thrift shop if such a thing exists where you live. They do where I live, and you wouldn't believe the good stuff that rich people throw away. The Episcopal Church thrift shop is a reasonable bet. If there's a Hospice thrift shop that could be a good source. Or if your nurse is a reader, try the library used book store. You could probably pick up something cute at a dollar store. Remember, it's not the gift but the thought that counts. The only therapy people I've found who absolutely won't take gifts are dyed-in-the-wool Freudians, but they're a vanishing breed. Good luck!