Best gifts: 20 luxury gadgets for the billionaire who has everything

When the pressures of modern life become too much, the $30,000 tranquility pod may help users reduce stress and break away from it all for a moment. It is claimed that the fiberglass pod blocks up to 90 percent of outside noise, while an in-built subwoofer creates gentle vibrations to relax the user.

See it now: Hammacher

The filthy rich Apple fans out there may enjoy the £139,995 iPod Touch Supreme, an iPod model reformed using 149g of solid gold and 300 color F diamonds, alongside a single-cut pink diamond.

See it now: Stuart Hughes

Another option for mobile device opulence is the Lux iPhone X range ($21,995 to $1.3 million). Unlocked iPhones are customized with 24k gold casings, diamonds, and French enamel.

If this isn't enough, there are also custom options available using unusual minerals including meteorite.

See it now: Brikk

If you're buying for someone who has everything, perhaps they wouldn't mind an upgrade of their lounge TV. That is, an upgrade to 262 inches.

C Seed's Blade 262 television ($539,000, plus installation) is a 4K widescreen model complete with six integrated speakers to push out surround sound.

See it now: C Seed

If the new flagship Apple wearable's standard appearance isn't good enough, this £3,695 remade version -- complete with platinum and black diamonds -- could make a great gift.

See it now: Stuart Hughes

For a luxury take on wireless earbuds, the $3,490 Gold Phantom Opéra de Paris do not disappoint. The manufacturers are bold in claiming the sound is "best in the world" -- and perhaps this is due to the earbuds' "gold leaf gills." You need a deep wallet to afford them, either way.

See it now: Devialet

Deceptively named, Mirror is just that -- but is also a connectivity hub for a variety of IoT and mobile devices. The Wi-Fi, Bluetooth, and USB-ready product costs $585 and is a stylish option for dressing rooms and bathrooms and can be used to tap into a variety of information provided by third-party services, including dental health, heart rate, sleeping hours, and exercise levels.

Mirror is equipped with a MediaTek MT8127 chipset, a quad-core Cortex 1.5GHz CPU, 2GB RAM, and 16GB storage.

See it now: Frednology

For an audiophile who has everything, perhaps a custom speaker system could make a great gift. Bang & Olufsen have gone all out with the $80,000+ BeoLab 90, an eclectic speaker system packing 8200 watts, 20 amplifiers, and wireless connectivity.

See it now: Bang & Olufsen

Misty II costs $1,999 and is an "advanced personal robot" aimed at businesses, inventors, programmers, and students. The programmable robot can be customized depending on the user's project, is self-charging, and some components can be swapped out. If you are looking for a luxury gift for a tinkerer, this may be a great option.

See it now: Misty Robotics

Another interesting tech gift for those who enjoy working in the garage of an evening, the MakerBot Replicator+ is a stylish and efficient 3D printer. It costs $2,499+ and prints 30 percent faster than its predecessor and offers a 25 percent larger build volume.

See it now: Makerbot

Ever wanted your own submarine? If you have the cash, you can now pick one up with a depth capacity of 1,000 feet and a maximum speed of three knots. It costs $2,000,000.

See it now: Hammacher

It might sound like sci-fi, but you can also purchase a hovercraft able to meet a 30 percent incline over fresh or saltwater, snow, sand, or standard ground. It costs $190,000.

See it now: Hammacher

A gift for those with deep pockets and a love of movies, the Tron Lamborghini Aventador is a luxury coupe complete with a V12 engine and customer paintwork. It costs $300,000+.

See it now: Lamborghini

Who says work desks have to be boring if you have the cash to spare? The Emperor, designed by Canada's MWE Lab, is a futuristic workspace which can cater for up to six monitors. It costs $5305+.

See it now: MWE Lab

Fans of deep space might enjoy taking such enthusiasm to their bedroom with a custom, space-themed bedroom complete with Deep Space Fighter bed and galaxy murals. It costs $6,000 to $18,000+.

See it now: PoshTots

For an impressive addition to any man cave, the Dieselpunk recycled metal giant robot, hand-made to order, would make a great gift for any mecha fan. It costs £12,674.27 ($16,445).

See it now: Etsy

Now discontinued, the Lego Star Wars Ultimate Collector's Millennium Falcon set fetches a high price online as a collector's item -- but if there's money to burn, this could become pride of place in a collection. It costs $2399+.

See it now: Amazon

A billionaire may have everything, but do they have a private IMAX private theater? The company offers custom cinema screens, seats, and setups for those with the money to spend. Pricing is on demand.

See it now: IMAX

If a standard bed simply isn't interesting enough, perhaps a floating bed might take your fancy? It costs $1.5 million.

Created by Universe Architecture BV, the architects wanted to create a bed which was not dictated to by mere gravity. The secret? A pair of magnets.

See it now: Universe Architecture