Weeble

Weebles is a range of children's roly-poly toys that was introduced in 1971 by the US toy company Hasbro and currently marketed under their Playskool brand. They are egg-shaped, so tipping one causes a weight located at the bottom-center to be raised. Once released, the Weeble is restored by gravity to an upright position. Weebles have been designed with a variety of shapes, including some designed to look like people or animals.

The catchphrase "Weebles wobble, but they don't fall down" was used in advertising during their rise in popularity in the 1970s and during successive relaunches in the early 2000s. The line was coined by advertising executive J. Mitchell Reed in his Madison Ave Office.

In the United Kingdom, Weebles were manufactured and marketed by Airfix under licence from 1973 until Airfix's collapse in 1981.

In 2023, PlayMonster acquired an international licence from Hasbro to manufacture and sell Weebles.

Design principle
Weeble is shaped like an egg—in order for the physics principles to work as intended, the shape must have a bottom which is a more or less smooth (unfaceted) hemisphere (to allow the Weeble to roll) and from the central vertical axis the shape must be nearly cylindrically symmetrical (that is, any plane cut through the vertical axis line must produce close to the same profile). Next, the shape must be filled with two basic types of unmixed solids, and the volume of the lighter solid must be greater than that of the heavier solid. Next, the overall shape must have constant positive curvature. Next, the relationship between the heavy solid and the light solid must be such that any orientation of the object off of the vertical axis line must cause the object's centroid to raise and to become offset. Lastly, the object must have only one position in which it can achieve stable mechanical equilibrium.

Combining these characteristics produces a basic Weeble. In theory, it is not possible to have a Weeble with a centroid that is too low to achieve a stable mechanical equilibrium.

List of playsets
Numerous playsets were made and marketed in the US throughout the 1970s including a Haunted House, Treehouse, Tarzan, Camper, Playground, Marina, Circus, Fun House, Mickey Mouse Club Set, Mickey Mouse Magic Kingdom, Western Theme Set, Weekender and others. Playsets often came with certain figures, though these could also be purchased separately.

The Weebles 1971–2011 Price Guide and Index lists and shows every Weeble model made over the preceding 40 years. There are 116 Weebles in total (83 regular; 21 peelable; 12 tumbling) including all egg-shaped sizes and variations made during 1971–1983. In 2011 Hasbro started making a new line of larger egg-shaped Weebles and had produced 42 new Weebles by July 2011. A wide range of accessories was available for the Weebles, including vehicles, buildings and furniture. Some sets had themes, such as the Weebles circus set.

There are 44 Weebles sets that include at least one Weebles figure and a vehicle, or larger sets made between 1972 and 1982.

A new line of Weebles was created in 2004 that were not egg-shaped but rather shaped like different animals. These were produced for a couple of years.

Weebleville (2004–2005)
Source:
 * Weebleville Town Center
 * Weeschool
 * Wegetable Stand
 * Weebles Barn Dance
 * Weehicles (four sets)
 * Weemobile
 * Wescue Wagon
 * Weegoaway Camper
 * Weebly Wobbly Tree House
 * Figures
 * Mini Weebles Pals (larger figures)

Storybook World (2006)
Source:
 * Hansel and Gretel's Wobbly Adventure
 * Jack and Jill's Wobbly Adventure
 * Goldilocks' Adventure Cottage
 * Cinderella Carriage
 * Weebly Knight & Ogre Adventure
 * Weebalot Castle
 * Figures

New Weebles (since 2011)

 * Musical Treehouse
 * Wobble-Go-Round
 * Figures
 * Weebles on the Bus
 * Bobblin' Boat
 * Wobblin' Wings
 * Turnin' Whirlin' Racers
 * Turn 'n Tumble Home
 * Rock 'n Wobble Playground

In popular culture

 * In 1975, the Macy's Thanksgiving Day Parade introduced a balloon of the standard Weeble design, which lasted until 1978. Almost 20 years later, balloonicles with the Weebles characters Tibbey, Tooey, and Bumpus made their debut.