Employees share the best and worst things to buy at thrift stores

Thrift shops can be wonderlands of bargain-priced fashion and quirky home goods. But it can take some digging and shopping savvy to separate the true treasures from items that aren't worth the money.

Insider spoke with current and former thrift-store employees to get their take on what to always buy at a thrift shop and which items to avoid bringing home.

Used books are a smart thrift-store purchase.

Thrift stores often have a range of genres. Former thrift-store cashier David Burbridge told Insider that used books are some of the best items to pick up at a thrift store.

"Books never go out of style, you can't buy the wrong size, and they're often a great value when compared to buying new," said Burbridge.

Burbridge also explained that since so many people donate books to thrift shops, some stores may actually have too many in stock. This often leads to sales where you can pick up books for mere pennies.

Stock up on clothes hangers at secondhand stores.

Some thrift shops will give hangers away for free. Why spend money on pricey hangers when there are piles of cheap ones to be had at your local thrift shop?

"I wish more people would come in to buy hangers! We're almost always drowning in them," Burbridge told Insider. "They're usually just a dollar or two for a huge pack, though sometimes we'll give them away for free."

Solid-wood furniture is usually a great investment.

Wooden furniture isn't always easy to find. Karen Spintzhauser, a former Salvation Army employee, told Insider that picking up a solid-wood piece of furniture at a thrift shop is typically a good idea.

"So much modern furniture is particleboard held together by glue and plastic screws. Finding a solid wood piece that is well-constructed is like finding treasure," said Spintzhauser. "I'd buy every time."

If you don't like the finish or color of an item of wooden furniture, stripping and staining or repainting it can breathe new life into the piece.

Thrift shops are the ideal spot to pick up baby clothes.

Babies grow out of new clothes in the blink of an eye. If you're expecting a baby or know someone who is, buying a pile of baby clothes from a thrift shop is an incredibly economical way to dress a new family member.

"Baby clothes were some of our most donated items, and they're also extremely popular purchases," said Spintzhauser. "If your child is only going to fit into something for a few months, I think it's smart to buy it used."

Dishes and cups are the perfect items to buy secondhand.

You can find simple and colorful cup and plate designs. Whether you're trying to fill bare kitchen cupboards or are just on the hunt for some quirky tableware, thrift shops should be your first stop.

"For me, there's no reason to buy glasses, mugs, or plates new. You can find so many nice sets and fun items at thrift shops for a fraction of the full price," said Burbridge. Though it can sometimes be tricky to find a full set of the same dish or glass, it's worth poking around in a thrift shop for bargains before buying full-price tableware.

On the other hand, electronics and appliances can be risky thrift-store purchases.

There's no guarantee the items you purchase will work. Burbridge told Insider that even though most thrift stores will try to make sure gadgets function as intended before placing them for sale, it's hard to really know the quality of any electronics you buy.

"With an electronic or appliance, you don't know how long it's been in use and whether all the wiring, buttons, and pieces are in good shape," Burbridge told Insider. "I would pass on electronics that aren't in their original packaging."

That bargain toaster may only last you a few breakfasts, but Burbridge noted that thrift stores can be good spots to find deals on batteries and vin