(CBS 58) -- Uber is out with its "Lost and Found Index" which reveals the most common and strangest items left behind by riders. 

Uber says the most commonly forgotten items are phones, cameras, wallets, and keys. 

The 10 Most Commonly Forgotten Items:

1. Phone

2. Camera

3. Wallet

4. Keys

5. Purse / Backpack

6. Clothing

7. Glasses

8. Headphones

9. Vape / E-cig

10. ID / License

Some of the most unique items left behind include chihuahua puppy, a set of 18-carat gold teeth, and a hula hoop. 

The 50 Most Outrageous Lost Items

1. 8 week old coffee-colored Chihuahua

2. Black faux fur neck cuff in a size large

3. A photo of a New Years kiss

4. 6 chicken tenders from 7 Eleven

5. A black and white tuxedo for a small dog

6. Full set of 18k gold teeth

7. Professional grade hula hoop

8. Salmon head

9. Medium sized medical marijuana pipe

10. Birth certificate and social security card

11. Star Wars skateboard

12. Very important headband with peacock feathers

13. A propane tank

14. A tray of eggs

15. White leather snakeskin Louboutin heels

16. Lego championship wrestling belt

17. A pack of hair and a brown brush shaped like a foot

18. Ed Sheeran concert tank top

19. Breast pump with breast milk

20. Two packs of Italian sausage and a Thanksgiving ham

21. A shopping cart

22. Ancestry kit

23. Lotion and beard oil

24. Silver & peach colored Venetian masquerade mask

25. Small handmade cat puppet

26. Babe Ruth signed baseball

27. White gold wedding band with diamonds

28. McDonald’s visor and a large fries

29. Harry Potter Magic Wand

30. A special pizza costume

31. A bird

32. Red pouch with hammock inside that says “hang loose”

33. Cheer skirt with a lion head

34. Yeezy boost 350 butters

35. A mannequin

36. Two pieces of my ever-so-special white wedding cake

37. A fog machine

38. Japanese style mandolin

39. Full fish tank with fish and water

40. An Elvis cape with a few jewels on it

41. One Gucci flip flop

42. Red Lobster takeout

43. Limited edition Chance the Rapper Starbucks gift card

44. 5x7 prom picture of me and my husband

45. 10 lbs pulled pork and 10 lbs pulled chicken

46. Rose gold Kim Kardashian lumee case

47. A piece of parchment paper with sap on it

48. Deer antlers and a welding helmet

49. My dirty laundry

50. A small plush toy of a cat eating a pizza slice

Uber says riders are most forgetful on Saturdays and Sundays. 

For riders who may have left something behind in their Uber, here's a video explaining how to get your items back. The best way to retrieve a lost item is to call the driver - but if you leave your phone itself in an Uber, you can login to your account on a computer. Here’s what to do:

1. Tap “Your Trips” and select the trip where you left something

2. Tap “I lost an item”

3. Tap “Contact driver about a lost item”

4. Scroll down and enter the phone number you would like to be contacted at. Tap submit.

5. If you lost your personal phone, enter a friend’s phone number (you can do this by logging into your account on a computer, or using a friend’s phone).

6. Your phone will ring and connect you directly with your driver’s mobile number.

7. If your driver picks up and confirms that your item has been found, coordinate a mutually convenient time and place to meet for its return to you.

8. If your driver doesn’t pick up, leave a detailed voicemail describing your item and the best way to contact you.