I've used this idea a couple of times in the past (thank you gifts and teacher appreciation gifts) and its always a fun way to "wrap" a present, especially if there are several small things you're giving.
So....first step, start off with a 2 liter bottle.
Empty it and clean it (obviously). Then make a small opening. (just big enough to fit objects in)
And stick a bunch of fun stuff inside! For this gift I included several "mommy stuck in the hospital for a few days" essentials such as lotions, chap stick, gum, coffee, a luffa, hand sanitizer, mouthwash, some chocolate, etc .
Then close the opening with some tape.
Then I decorated the bottle with cardstock to cover the opening where I stuffed everything in. I got the Coca Cola font free from here.
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Hopefully you can have a little fun with this packaging idea the next time you give a gift. :)