Trust me on this, it will be the best $25 you ever spent. I came across a post over at The Mike Matas Blog on how to make this huge poster from your own pictures:
So I went ahead and made one for our office here at home. It is a collection of photos from our vacations, our family, new babies, etc. that all mean a lot to us. I did it as a surprise for my wife and boy was she surprised! She could not believe how great it looked, especially after I went to IKEA and bought a huge frame for it. The poster is 20 X 30, but you can make them smaller as well. I just did one for a friend the other day and we made hers 16 X 20. I ordered it directly from Apple and the cost including tax and shipping was a hair over $25. Add in the frame and the total was about $50 for an incredible piece of art that everyone comments on. Imagine sending one to your mom or making one of you children to hang on the wall, how perfect! You can find the instructions at the Mike Matas Blog, and if you need any help, let me know and I will see what I can do. It went pretty smoothly for me so hopefully it would for you as well.