Niven is a frequent collaborator; see his other contributions under Niven w/J. Pournelle, Niven w/EM Lerner, Niven w/S. Barnes, Niven w/Pournell, Flynn and Niven w/GC Johnson.

Dime Disk - data storage
A very small data storage medium.

The Best of all Possible Wars (1998)

Displacement Booth - instant transport via teleportation
A teleportation portal.

Flash Crowd (1972)

Dolphin's Hands
Digital prosthetic for dolphins.

Handicap (1967)

Drinking Bulb - best drinking container
A small container, used for drinks.

The Warriors (1966)

Droud - wire your pleasure center
A transformer to step down house current for the wire providing current directly to the pleasure center of the brain.

Death by Ecstasy (1969)

Ecstasy Plug
An implanted module that allowed a wirehead to plug himself into ordinary house current.

Death by Ecstasy (1969)

Electromagnetic Cannon
A set of devices on the Ringworld used to land spacecraft safely on the fast-moving rim.

Ringworld (1970)

Empty Man - a body ready for a mind
A fully-functioning body, the personality of which had been wiped clean.

A World Out of Time (1976)

Escalladder - a ladder you can ride
A ladder that you don't have to climb to get to the top.

Crashlander (1994)

Flash Crowd (Flash Mob) - or flash mob
What you call a group of people who suddenly appear at an interesting location.

Flash Crowd (1972)

Flashlight Laser
Small cylindrical device that generates a green beam of variable intensity and focal length; can illuminate or cut.

Ringworld (1970)

Flexible Armor Suit - now you're Superman
A pressure suit that, while flexible, becomes rigid like armor upon impact.

Neutron Star (1966)

Flight Stick
A personal flying vehicle, stripped down to the basics.

The Flight of the Horse (1969)

Floating Booths
Comfortable bar booths that float around and come together for conversation.

Handicap (1967)

Floating Castle
A vast building floating freely above the land surface of Ringworld.

Ringworld (1970)

Flycycle - if a Harley could fly
Combination flying motorcycle, kitchen and autodoc.

Ringworld (1970)

Food Brick - tasty cubes
Appropriate manufactured food for any species.

Ringworld (1970)

Frictionless Cups
Cups with a special surface to which liquid does not adhere.

Protector (1973)

Fusion Sunlight Tube
Central light source for a spun cylinder space station.

At the Bottom of a Hole (1966)

General Products Hull - impervious key to space travel
Nearly indestructible outer skin for spaceships; pick your hull size and put what you want inside.

Neutron Star (1966)