Last year, an estimated 100 million Americans traveled for the holidays and it’s likely millions will fly for the end of year holidays.

However the Transportation Security Administration (TSA) has a number of items that can and can’t be brought on planes or through security.

Inside a California Department of General Services warehouse at 1700 National Drive in Sacramento, thousands of items that didn'’t make it past TSA screenings are being auctioned off.

There are boxes full of pocket knives, cork screws, sling shots, and other day to day items that don’t meet flight guidelines.

“The most unusual thing that was confiscated from TSA was a box of rocks,” said CDGS spokesperson Michael Liang. “Rocks. I have no idea, but they sold for $60.”

Other unusual items that you might be considering bringing on a plane as a gift or souvenir, that were confiscated or voluntarily turned over for not cleared to board planes include snow globes, miniature baseball bats, and golf clubs.

These potential gift items may have you thinking twice about what you’re bringing to family or friends for the holidays.

The TSA suggest that you do not wrap your gifts before boarding as security may need to unwrap them which would likely be both upsetting and longer wait times for other passengers.

Pies, cakes, donuts, and turkey are allowed through security. However, more than 3 oz. of liquids including jams, jellies, and gravies will not be permitted.

For items not cleared for your carry-on luggage, you might want to consider packing those items safely in your checked luggage or event shipping them to wherever you’re headed.