I have been using the Go Talk One recordable photo frames for an inexpensive AAC tool over the last 3 or 4 years. You can re-record them quickly and slip new pictures in and out. They are also pretty durable, thin and compact.
I like to use them in sets where we put 4 together and have choices or activities on them. They allow the student to handle choices and language in a manipulative way. They are great for sequencing life skills and events. The auditory cues within the recording can simulate and encourage speech. Linda Burkhart has a tutorial on how to design and use them here. Hers is an older Radio Shack frame that has a hinge and folds over. the new ones don't appear to do that anymore, but there are some good tips there.
The Go Talk Ones by Attainment Company are around $12, and the Radio Shack variety with a clear arcrylic frame are $9.99. They make a great gift or stocking stuffer to have around the house with food or activity choices, selecting a feeling, colors, numbers, etc.
Leave one out Christmas Eve for Santa to record a message!