Have you seen the Equivalent Fraction tool on Illuminations. Here is a link to this tool.
Your students can create equivalent fractions by dividing and shading squares or circles, and matching each fraction to its location on the number line.
It's a fun way to see representations of equivalent fractions without a paper and pencil activity. There is an iTunes app too.
Here's the gameboard from the Fraction Game.
This applet allows students to individually practice working with relationships among fractions and ways of combining fractions.
Fun and Free!