I worked in a different capacity. During college, I worked for the Humane Society as an Assistant Pet Therapist and Volunteer Photographer. It was really neat. At first I was just a photog, taking pix of dogs and uploading them to the website (because animals with pix are more likely to be adopted than ones without). I remember the first picture I took--the dog had a GREAT personality and was such a ham! The person who adopted her said she came in because she fell in love with the photo and knew she had to have her.
I felt very warm and squishy! If the local shelter has an outdate website, maybe your daughter could help with that? All it takes is a digital camera and a photobucket account. Once the pix are uploaded, animals are adopted out soooo much fast, especially if someone's planning an adoption fair.
Later, I became an APT. We took puppies to a group home for emotionally disturbed teens. That was also incredibly rewarding. Not only was it therapy for the kids, but it gave the dogs more time to be accustomed to human handling before being adopted. This was especially important for the dogs to be around children before possibly being adopted out to homes with kids. Of course, the dogs we took were all deemed "okay" to be around kids but extra interaction can only help.
After than, I moved to another city and took up with the SPCA there. Being a grad student, I didn't have a lot of time so I mostly walked dogs but came in for some crises too. For example, another shelter had rescued dogs from a puppy mill and were overwhelmed so we took their overflow. All those dogs needed to be treated, bathed, etc. There was a lot of cleaning cages, doing laundry, and moving crates. I came in for situations like that. Is your daughter allowed to help with a shelter's crisis situations or does it have to be soley her idea? Because that was several days worth of work, easy.
I liked the fundraiser idea LO had. Shelters always need things like cardboard, old newspapers, laundry detergent, cleaning supplies, etc. I used to buy the latter at the dollar store, 5 bucks could do a few loads. If she held a fundraiser, say bring a dollar or a stack of old newspapers, she could meet some serious needs!