If you, like me, have an unfulfilled wish to sit on Ganesh's lap, you might find these homemades as adorable as I do, especially the play-doh Ganesha. See Indira's "Homemade Ganapati Bappa" on her superb Mahanandi blog (a great blog to get lost in, with some of the best recipes, reminiscences, and saliva stimulators anywhere).
But are you as confused as I (or me)?
Ganesh (or Ganesha) has four arms. Maha-Ganapati has ten.
—But just count these.
One left, one right, adds up to two. So gain a few, lose a few. What's the harm? Besides, he's got more names than arms.
—He's blinded you with charms!
That's 'charm', not charms.
—Don't get me started on English, pleeeze!
See also, for the joy of it, Indira's "Vinayaka Chaviti Celebrations"