They say it's the thought that counts - but not when these novelty gifts are concerned.

From a Donald Trump car sticker to bacon-scented air fresheners, the team at comparison site Mozo.com.au have surveyed Australians to track down the 10 worst presents money can buy this Christmas.

Director of Australia's online "money saving zone" Mozo, Kirsty Lamont, said Aussies would rack up a A$29 billion credit card bill this December — and she urged shoppers to think twice before snapping up a gag gift.

Kiwis should do the same.

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"While the opportunity to chauffeur President Trump around might get a few giggles, the reality is that these novelty gifts are often stuffed away in the shed or cupboard after Christmas Day, never to see the light of day again," she said.

"Although it might be hilarious to give your pet dog some peanut butter flavoured bubbles, or gift dad a bacon air freshener for the car, you might be better off investing in a quality toy for your dog or throwing some real bacon on the BBQ."

Lamont said women in particular hated the toilet golf set while men loathed the inflatable cat unicorn.

Over 55s disliked the playable guitar T-shirt the most while younger voters weren't fans of the booze bracelet.

Unsurprisingly, people from warmer states didn't like the knitted beard beanie while Tasmanians and Victorians voted against the inflatable cat unicorn.

Still in the market for a truly heinous gift for your in-laws, or a Secret Santa present for that passive-aggressive colleague?

We've got you sorted.

1. RIDE WITH TRUMP STICKER
If someone in your life either loves or loathes President Trump, why not buy them a Ride with Trump sticker? It adheres to car windows, making it look like The Don is in the passenger seat.
$17.14, eBay

The Ride with Trump car sticker is the ultimate dud gift. Photo / Supplied
The Ride with Trump car sticker is the ultimate dud gift. Photo / Supplied

2. TOILET GOLF

Because bathroom time is the perfect chance to work on your technique, right?

$16.95, latestbuy.com.a

3. INFLATABLE UNICORN FOR CATS

Because everyone knows unicorns are greater than cats.

$12.99, yellowoctopus.com.a

4. BACON AIR FRESHENER

Everyone loves bacon (sorry, vegetarians) but would you want your car to smell like a butcher's shop?

$6.99, yellowoctopus.com.a

5. KNITTED BEARD BEANIE

For those who can't grow their own.

$19.99, yellowoctopus.com.a

6. PEANUT BUTTER FLAVOURED BUBBLES FOR DOGS

Why, though?

$14.99, eBay

7. SANDAL SOCKS

For the ultimate geek, you can wear these sock-sandals AND your sandals.

$16.99, yellowoctopus.com.a

8. HOT COOKIE USB COFFEE CUP WARMER

For the person who has everything, I guess?

$34.95, coolthings.com.a

9. BOOZELET BRACELET

For that special someone who really should be in AA.

$39.95, gyrofish.com.a

10. PLAYABLE GUITAR T-SHIRT

For frustrated rock stars.

$34.99, popcultcha.com.a

Happy shopping!