I am the owner and operator of Hobos Hut a Shaved Ice or New Orleans Sno Ball Business.  Recently a young gentleman contacted me wanting to know if I would make his son (10 yrs) a Birthday Cake made from or out of Sno Balls. He also wanted it to be in the shape of a tennis racket with some tennis balls also. Help please. He said it means everything to his son to have this please Cake Experts throw me some lifelines here. 

I am not sure how you would keep it from melting.

I would do SIMPLE version like with cupcakes. Make a "platter" out of cardboard. Draw on a tennis racket (shape) and "fill in" with snowballs (in cups, I assume). Accent with strips of licorice to make the "strings".  Make a few snowballs (in cups) as tennis balls, again place a few curved licorice on it to make the curved lines.

If you do the lay out and drawing first, add the empty cups, and are "ready" with licorice strings, I think you can assemble quickly and get the effect you want. 

https://www.google.com/search?site=imghp&tbm=isch&source=hp&biw=913&bih=788&q=cupcake+cake+tennis&oq=cupcake+cake+tennis&gs_l=img.3...1339.5572.0.5876.19.12.0.7.4.0.136.1168.8j4.12.0....0...1ac.1.64.img..4.15.1080.SGYT1qtcy68#imgrc=h3N1qAmaE2LpIM%3A

Not the prettiest example, but you get the idea....