My mother taught me this trick: for small items that need to be laminated, packing tape works great! Laminating can be really expensive, but packing tape is cheap. It's also clearer and easier to use than contact paper.
Even when an item is a little wider than the tape, you can sometimes get away with using several strips side by side like I've done here for a diaper bag tag that I made a couple days ago. It does make for a faint line down the middle, but it's really not that noticeable.
To see other projects where I've used this method see here and here.
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