If packaged properly, several weeks.
One homemade food that can last 2 weeks without being refrigerated is cookies. You do need to keep the cookies in a sealed container to keep them fresh.
Shelled pecans will keep for two years in the freezer. They will hold for a couple months after thawing but can be refrozen. They can also be refrigerated in an airtight container for several months.
It will last longer if it is refrigerated.
3 to 4 days refrigerated
Most seeds can last several years without being planted with no problems whatsoever.
Absolutely!
I read urine was good for 24-48hrs. does it have to be refigerated during this time? Yes it does need to be refrigerated. Without refrigeration, the specimen can last about 24 hours. If refrigerated, it can last from 5 days to 2 weeks (according to who you ask), and apparently, freezing can let the specimen last up to a year. Otherwise, bacterial growth can taint the specimen.
Vacuumed wine that is refrigerated can last at least two weeks.
24 hrs
3-4 days
Pillsbury is a great go-to place for glazed pecan recipes. Pecan-specific online retailers will sell glazed pecans and perhaps dedicate a page to recipes for glazing your own. A last resort would be a recipe book for deserts involving pecans.
This will depend on the ingredient. If produce, it will last a few days.