We can all recall the joyous feeling of getting a new toy inside of our Happy Meal at McDonald's. While most of us have outgrown the Happy Meal stage, Canada's Waterloo University and McDonald's Canada just released an adult toy that will have music fans singing high praise.

In celebration of the McFlurry 22-year anniversary — which was originally created in Canada — McDonald's Canada, the University of Waterloo's Audio Research Group along with the Toronto-based industrial design group Stacklab, created a limited time product, that might actually be the first of its kind.

The McDonald's McBoombox is a recyclable drink tray that's been outfitted with some custom designed "cones" that help create a full, more robust sound. The cones are a 10-side shaped polygon, enabling the 100 percent cardboard speakers to send sound out audio at a decibel level of 70.4, according to It'sNiceThat.com.

To put 70.4 dB into perspective, an ordinary iPod with headphones can reach 100-115 dB, with the volume at 50 percent. So, it might not blow your eardrums, and you might not be able to feel the bass in your chest, but you'll be able to hear some tunes at a reasonable volume.

However, the McBoombox was produced in very limited quantities, according to Mashable. For the lucky ones, who caught the slim five-hour window of opportunity, McDonald's gave the McBoombox away on July 28 from 2:00-7:00 pm. For everyone in the U.S. that wasn't able to cop this limited edition product — there's always eBay. So, there's still a chance for all you music loving McDonald's heads out there.