Celebratory domain name, derived from the word "congratulations", would suit a fun and friendly business.
The name "congrato" has eight characters and three syllables. Successful brands using three syllable names include Verizon, Toshiba and KFC.
Congrato.com is a dot com domain. Dot com domains are the most valuable top-level-domain in the world, famously used by websites like twitter.com. Once secured, a dot com all but guarantees no-one else can outrank you for your own name in the long run.