Only a beautiful hour and a half drive from Eugene, Florence is a quintessential Oregon coastal town. Old Town is home to great food and ice cream as well as antique shops galore. The beach (though usually a little chilly, so wear layers) is gorgeous. Florence will be doing a 4th of July fireworks show over the Siuslaw river around 10pm.
Maybe one of the only events doing fireworks for 4th of July in Eugene proper.