A Facebook friend, Marybeth Kelly Spencer, posted this and I wanted to share it.
Warning! This may void warranty. Please, no complaints if the shoes get stained or damaged.
DIY Shoe Stretcher:
Rubbing alcohol spray (home-made shoe stretcher): Make a spray of 50 percent rubbing alcohol and 50 percent water in a spray bottle. Spray the inside of each shoe and wear for about 20 minutes. An alternative to this is to simply rub alcohol directly onto the parts of the shoe requiring stretching; put the shoe or boot on while still wet, as the alcohol will dry quickly. Another variation is to take a pair of cotton socks, soak them in rubbing alcohol and squeeze out the excess. Then put on the socks and wear with the shoes until the alcohol dries. Repeat several times if necessary.