For our wildlife projects, we use hand and book icons to indicate the educational level of the project and the amount of animal interaction volunteers can expect.
The educational levels of our projects range from a basic level of learning for the volunteers during their stay (one book) to a very educational project where the volunteers are tasked with individual and group research assignments, etc. (five books)
The emotional level of our projects range from not emotionally challenging (one smile emoticon) to very emotionally challenging (five smile emoticons)
Physical Challenge level
The physical challenge level of our projects range from not physically challenging (one arm) to very physically challenging (five arms)