Gift shops are a familiar part of the vacation experience.

So we wondered: What are some of the more bizarre and unique items you can find when you take to the open road?

Following is a list of 13 crazy souvenirs you might come across during a road trip.

Bison head ornament made of bison dung
Victor Bruha - Dung & Dunger

This ornament, created by Dung and Dunger, is made from real bison dung paper pulp. It is hand-decorated and adorned with yarn made from real American bison hair. The ornament costs $13.99 and can be found at Yellowstone National Park Lodges.

Find your own diamond
Arkansas Department of Parks and Tourism

Crater of Diamonds State Park in Arkansas offers park visitors a one-of-a-kind experience — the adventure of hunting for real diamonds. Visitors can search over a 37 ½-acre plowed field that is the eroded surface of the world's eighth largest diamond-bearing volcanic crater. If you find a diamond, it's yours to keep. Park staff provide free identification and certification of diamonds found there.

Scorpion lollipops
From Amelio C. Enterprises website

The Cactus Candy Company in Arizona offers a unique selection of items utilizing plant and animal life found in the state. The scorpion lollipops use real and edible scorpions.

Popcorn on the cob
Big Red Popcorn

Nebraska is the Cornhusker state and is known for its corn. The Big Red Popcorn Company sells microwavable popcorn on the cob that allows that buyer to watch the corn kernels pop off the cob.

Wheel cypher secret decoder

Monticello sells a variety of items that Thomas Jefferson created and used. One of the items he created was a wheel cypher to encode and decode messages. The wheel cypher consists of 26 cylindrical wooden pieces with each letter of the alphabet written on it in a random order. The wooden wheels can be turned to create many different code variations.

Bertie Bott's Every Flavour Beans

At Harry Potter World, visitors can pick up a unique assortment of tasty and terrible jelly beans. Bertie Bott's Every Flavour Beans are known for their interesting and uncommon flavors like dirt and earwax. These jelly beans are not for the faint of heart.

Hershey's chocolate candle

In Hershey, Penn., visitors can buy a variety of chocolate and candy-scented candles.

Aquabot 2.0

At the Georgia Aquarium, visitors can buy a robotic fish that is part pet and part toy. The fish wakes and swims, dives, and explores around its surroundings when someone taps on the fish bowl. Kids can experience having a pet fish without all the messy cleanup.

Personalized mini Constitution

At the Smithsonian, visitors can be model citizens when they buy a personalized mini Constitution that they can carry in the palm of their hand. It includes the Bill of Rights, all constitutional amendments, the Declaration of Independence and four other related documents.

Space pen
Fisher Space Pen Co.

The Fisher Space Pen company in Nevada started when its founder created a pen that could be used in space. The company sells anti-gravity pens that can write upside down or at any other angle, under water, through grease, extreme temperatures (minus 30 to 250 degrees Fahrenheit), on almost any surface and, of course, in the gravity-free vacuum of space. The possibilities with the pen are limitless.

Louisville Slugger sunglasses
Shwood Eyewear -

Visitors can buy sunglasses made from U.S.-grown Louisville Slugger ash wood. The Camby company re-imagines retired Louisville slugger bats into eyewear as a tribute to America's favorite pastime.

Alligator head

Alligators are common in Florida and several different suppliers sell gator heads as souvenirs.

Deep sea water
Adobe stock

In Hawaii you can find pure, pollutant-free water. It is pumped from 3,000 feet underwater off the coast of Kona. Bottles of MaHaLo or Kona Deep water can be found at several different Hawaiian markets and can usually be purchased for less than $5 a bottle.