Hi Aleaha! You've come to the right place for help. I have mailed packages to my Walt Disney World Resort, and I've mailed things home. You certainly can mail items to your own home. The process is relatively simple, and you have a couple options.
The first option is to take your items to the Business Center at many Walt Disney World Resorts. The
Business Center is a full service facility. Before your last day, you can bring everything there and they will package and send your items for a charge. Given the airlines checked baggage pricing, it will probably end up being much more cost effective.
Another option is to have items sent home at time of purchase. Walt Disney World merchandise shops will ship purchased items to your home address, and the prices are pretty reasonable.
Happy shopping, and I wish you a MAGICAL vacation!!
-Jacqui