I'm not sure what I'd do with a bunch of decorative spheres emblazoned with numbers and letters*, but I ADORE them. Suesan first spray painted
ping pong balls then added vinyl letters to them; she then sealed them with a glossy clear coat. Her inspiration were Pier 1's ABC 123 Spheres.
For the entire tutorial, head on over to Frou-FruGal.
Via Knockoff Decor
*Put 'em in a big bowl?