When buying hot dogs, open the package put all the wieners on a cookie sheet, then freeze them. Once they are frozen put them in a freezer bag. Then when you want one or two, they will already be separated.
When buying pre-packaged hamburger, notice how the meat always seems to have a big lump at one end from the way the machine extrudes it? Use your hands to flatten it and disperse the meat evenly in the package (being careful not to break the wrapping).