Another use for egg cartons is this colorful wreath from Homemade Serenity. This could stay out well past Easter and enjoyed the rest of spring.
Garlands (or bunting) are especially popular these days. This Upcycled Easter Egg Bunting from Anne Weil at flax & twine is made from recycled cereal boxes, fabric and trim scraps and a sewing machine. What a lovely alternative to the plastic egg garlands I've seen lately.
Let's not forget my Repurposed Milk Jug Easter Baskets tutorial from last year!
Since I mentioned unnatural dyes in my rant above I thought I should include information about using natural dyes. Two Men and a Little Farm has a great chart with the ingredients needed to make eleven different natural dyes for eggs. I cannot wait to try some of these colors!