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Nikola Toy Temperature Difference Stirling Engine Propeller Mirror Cup Cover
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Temperature Difference Stirling Engine Propeller Mirror Cup Cover

$39.90

In stock at nikolatoy.com

The Temperature Difference Stirling Engine Propeller Mirror Cup Cover sits on a hot drink and spins a propeller from the heat. At $39.90 it suits coffee drinkers who want a science toy at breakfast.

Shop now at Nikola Toy →Code Welcome

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Price and stock from nikolatoy.com, refreshed daily. We may earn a commission if you buy.

Highlights

  • Sits on top of a hot cup
  • Heat spins the propeller
  • Mirror finish

Best for

Coffee and tea lovers who want a desk science toy.

Things to consider

  • Cup size compatibility is not listed
  • Runs only while the drink is hot
  • Material is not stated

Key specs

Price$39.90
PowerHeat from a hot drink

Our take

A clever, cheap coffee-time toy.

Why it makes a good gift

A small Stirling engine that sits on a coffee mug and spins its propeller from the warmth of the drink.

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Temperature Difference Stirling Engine Propeller Mirror Cup… at a glance

BrandNikola Toy
Price$39.90
AvailabilityIn stock at nikolatoy.com
CouponWelcome
ReturnsOrders can be canceled within 5 hours for a full refund. After shipment you must accept…

Price check

At $39.90, the Temperature Difference Stirling Engine Propeller Mirror Cup… is one of Nikola Toy's more affordable items, whose 493 listed products run $1 to $15,750.

Buying from Nikola Toy

Nikola Toy suits adult collectors and gift shoppers who want unusual metal desk toys, RC tanks or working engine model kits, and shipping is free worldwide. Skip it if you want an easy return: personal-reason returns are at your cost and the store does not publish a warranty. Check the listing for specs and size before ordering, since many product pages carry little description.

Shipping
Standard shipping is free worldwide at 7 to 15 business days, and DHL Express takes 2 to 5 business days. Processing takes 1 to 2 business days, and some items ship from a US warehouse.
Returns
Orders can be canceled within 5 hours for a full refund. After shipment you must accept delivery and then return the item, paying return shipping and any duties for personal-reason returns; custom and Final Sale items have extra limits.
International
The store ships worldwide with free standard shipping, quoting 2 to 14 business days for the US, Canada, much of Western Europe and parts of Asia, and up to 25 days for other countries. EU buyers have a 14-day right of withdrawal.

Read our full Nikola Toy review and shop all products →

Frequently asked questions

How does the Stirling cup cover work?
Heat from your drink drives the engine and turns the propeller.
Will it fit my mug?
Size is not listed. Ask Nikola Toy.
How much is the Temperature Difference Stirling Engine Propeller Mirror Cup…?
Nikola Toy lists it at $39.90 on nikolatoy.com. We refresh prices throughout the day, but always confirm the final price at checkout.
Is there a coupon code for the Temperature Difference Stirling Engine Propeller Mirror Cup…?
Nikola Toy's store-wide code Welcome can be entered at checkout on nikolatoy.com. Nikola Toy sets the discount, and some items or sale prices may be excluded.
What is Nikola Toy's return policy?
Orders can be canceled within 5 hours for a full refund. After shipment you must accept delivery and then return the item, paying return shipping and any duties for personal-reason returns; custom and Final Sale items have extra limits.
How long does Nikola Toy take to ship?
Standard shipping is free worldwide at 7 to 15 business days, and DHL Express takes 2 to 5 business days. Processing takes 1 to 2 business days, and some items ship from a US warehouse.
Where can I buy the Temperature Difference Stirling Engine Propeller Mirror Cup…?
The Temperature Difference Stirling Engine Propeller Mirror Cup… is sold directly by Nikola Toy on nikolatoy.com. The Shop now button on this page goes straight to the product there, and code Welcome can be applied at checkout.
Is the Temperature Difference Stirling Engine Propeller Mirror Cup… in stock?
Yes. Nikola Toy lists it as in stock on nikolatoy.com as of our latest check. Stock and prices refresh throughout the day.
Is Nikola Toy a legit store?
Nikola Toy suits adult collectors and gift shoppers who want unusual metal desk toys, RC tanks or working engine model kits, and shipping is free worldwide. Skip it if you want an easy return: personal-reason returns are at your cost and the store does not publish a warranty. Check the listing for specs and size before ordering, since many product pages carry little description. Our full Nikola Toy review covers shipping, returns and what to check before ordering.
Is the Temperature Difference Stirling Engine Propeller Mirror Cup… expensive?
At $39.90 it is on the affordable end of Nikola Toy's range ($1 to $15,750 across 493 products).
Is the Temperature Difference Stirling Engine Propeller Mirror Cup… a good gift?
A small Stirling engine that sits on a coffee mug and spins its propeller from the warmth of the drink. It appears in our gift guides; see the links on this page for more ideas.

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