Ben Sztejka says DVDs are soaring in popularity again.
He said: "Streaming may be king, but just like CDs and vinyl before them, DVDs are back with a bang. Especially for vintage shows.
"So, if you have any Carry On boxsets, the Beatles Anthology, the Alien Quadrilogy, or anything else in your attic, it could be worth more than you think."
Toys
Toys and Christmas go hand in hand. But it's not just the latest, brand new toys that people are on the hunt for over the festive season.
Ben said: "Whether vintage classics or trending contemporaries, toys are in high demand right now.
"The emphasis has to be on quality. Boxed or nearly new is best.
Savvy mum labelled a 'genius' as she shares the secret way she stashed over £400 to buy her kids' Christmas gifts"But if you can find a theme with an avid following – dinosaurs, Hot Wheels, Barbie, or Nintendo – you’ll almost certainly find a market."
Decorations
If you want to capitalise on this one, you'll need to be quick.
"Whether it’s ‘decorate your own’ kits for children, beautifully handcrafted baubles, or personalised ornaments, there are few things that sell better at Christmas than decorations" Ben explained.
"But time is running out if you want to maximise your profit."
Clothing and footwear
Beyond the three tips above, clothing remains a top seller on Vinted.
And it's the perfect time to hunt out old seasonal outfits and footwear.
Ben said: "Christmas is the season of things that are worn once – kid’s Christmas jumpers, sparkly partywear, novelty ties, and ridiculous shoes.
"Which means that people are keen to buy them used. And that the clothing is usually in excellent condition.
"So, while designer trainers, vintage jeans, and Doctor Marten boots are big sellers throughout the year, November and December is the time to sell your party gear."
Don’t get caught out by the Grinch
Selling online is an excellent way to make cash for Christmas.
But it’s easy to get caught up in the moment and forget that the taxman is watching.
HMRC is linked to all of the UK’s online selling platforms – including Amazon, eBay, Etsy, and Vinted.
Once you make in excess of £1,000 per year from your sales, you’re expected to pay tax - unless you can prove that you are genuinely selling your own used items.
Sales tax equates to 19% of all profits raised in a tax year. So, if you’re working to a low margin, you may find yourself as happy as a Grinch on Christmas Eve.