Here is a slide show to introduce indirect objects. It explains that indirect objects are much like birthday kids. They receive the direct object. The direct objects are like the birthday gift. It provides:
Explanation of the birthday kid analogy
Examples of indirect objects in a sentence
It also reminds students of the questions to ask to find indirect objects in a sentence.
It is a PDF file. Choose View: Full Screen to view as slides. It can be projected on a SmartBoard or Interactive Whiteboard.