This winter I noticed a bright red berry against the white of the snow and identified it as a viburnum trilobum, or Highbush Cranberry. They're an edible fruit, though comprised mostly of pit. I read that the birds save these berries until mid to late winter (how they know to save them is beyond me, but cool!) and eat them when other food sources are scarce. A flock of Cedar Waxwings can wipe out an entire bush of them in no time. Apparently they didn't visit this particular bush because I was surprised to see the berries still hanging when I went walking this weekend.
Their bright red had faded a bit and the berries were sort of translucent. I picked what was left and brought them back to the house to see what kind of dye they would make.
note: milk jugs make handy gathering buckets.
Just cut off the top, leaving the handle, and voila!
When you're done using it, just recycle as normal.