The labels of two bottles read GRIB and BROEK respectively - the surname of Robert Gribbroek, who was a layout man and background artist at Warner Bros. Cartoons.
The hawk gives Sniffles a copy of Good Mousekeeping magazine - a play on Good Housekeeping magazine.
The hawk makes Sniffles a cup of Opaltine for Sleep - a take-off of the various Ovaltine flavorings for milk.