The Impossible Puzzle


Our Limited Edition 40-piece "Impossible Puzzle" is a challenge for a good cause.

Crafted from clear acrylic off-cuts originally from our neon signs, it's not just difficult, but devilishly entertaining, perfect as a stocking filler or after-dinner head-scratcher over the Holiday break.

But here's the magic: 100% of the profit from each puzzle sold goes to the charity we support,  GreenSeas, dedicated to protecting our oceans from plastic pollution.

Feeling lucky? Share your puzzle victory on Instagram by tagging @neonfilterig for a shot at winning a £100 Neon Filter gift card! (Entries close January 2nd 2024)

Plus when you're ready for a new adventure, simply use the included free-post return label to send it back. We'll recycle it into brilliant new neon signs, lighting up the world one eco-friendly puzzle at a time! 

Scan the QR code on the box to find your closest drop-off point.

The Impossible Puzzle


(Or choose Faster Production speeds at checkout)

Optional Extras

About Neon Filter LED Neon Signs

Neon Filter
Fast & Free* UK Delivery

Made & delivered in 2-3 days. *Free delivery on orders over £35.

Neon Filter
Plug & Play

Simply take your sign out of the package and it's ready to shine.

Neon Filter
Handmade to order in the UK

Designed and manufactured at our HQ in South Warnborough, Hampshire.

Neon Filter
Energy Efficient

Keep the lights on year-round with very little impact on your electricity bill & the planet.

Neon Filter

Our signs are made of clear acrylic & LED, making them incredibly light.

Neon Filter

All our signs have over 10 years' expected lifetime when cared for correctly.

Create Your Own Neon Sign

Neon Sign FAQs

Our most asked questions. You can read our full FAQs here.

How fast can I get my neon sign?

We have the fastest production and delivery time in the UK, taking no longer than 5 working days for you to receive your sign after ordering. You can choose rush options at checkout to get yours in 3 working days.

How much does delivery cost?

Free over £35 as standard, £2.95 for orders under £35.

Delivery costs as calculated during checkout based on weight and destination.

Can I use my sign outside?

We can make signs splash-proof, but not waterproof. They’re great for occasional outside use, or outside use undercover. 

How can I hang my neon sign?

We have three mounting options available - Wall-mounted (with or without stand-off mounts), fast-mount adhesive pads and hanging from the ceiling.

What is your return policy?

We create each order to your design, meaning we don't accept returns for custom orders, sadly.

Get Inspired

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