You will need:
1) An interesting object to capture
2) A simple camera (your phone camera will do)
3) 123D Catch http://www.123dapp.com/catch to capture the object
4) 123D Make http://www.123dapp.com/make to create slices. You can either download the desktop version or use the online app
Step 1: Capturing the 3D Object
Use your camera to capture @ 35-40 images. Refer to the tips to get good results http://www.123dapp.com/catch/learn
Upload the images into 123D Catch and wait as your 3D model is created. Once you get a model that is satisfactory, strip away all the unwanted parts using the selection tool + delete
You can publish the model to the gallery if you wish to share it with the world. If not, it will be available only to you in the My Corners tab
Step 2: Creating Slices
Open 123D Make online http://apps.123dapp.com/make/ and login to view the My Corner items.
Drag-drop the model you created using 123D Catch. This should load the sliced version of the object.
Try messing around with the object size and orientation till you get good results.
Step 3: Making the object
You can also use this model directly using this link http://apps.123dapp.com/make/?contentid=603652 or view it in the gallery at http://www.123dapp.com/3dp-Catch/Nativity/603652