Picture credits

All pictures come from Wikimedia Commons and are in the public domain or available under an open licence. They have been resized. Spoiler warning: this page gives away the answers.

• 70s: Lava lamp — DMGualtieri, CC BY-SA 4.0, source
• 70s: 8-track tape — Rick Harris from Toronto, Ontario, Canada, CC BY-SA 2.0, source
• 70s: Atari 2600 — Evan-Amos, Public domain, source
• 70s: Polaroid — Michael Gatchell, CC BY 2.0, source
• 70s: Space hopper — Reptonix free Creative Commons licensed photos, CC BY 3.0, source
• 70s: Platform shoes — Charles Jourdan, Public domain, source
• 70s: Concorde — SDASM Archives, No restrictions, source
• 70s: Mood ring — Moodman001, CC BY-SA 4.0, source
• 80s: Rubik's Cube — Lars Karlsson (Keqs), CC BY-SA 3.0, source
• 80s: Walkman — Binarysequence, CC BY-SA 4.0, source
• 80s: Game Boy — Raimond Spekking, CC BY-SA 4.0, source
• 80s: VHS tape — LoMit, CC BY-SA 4.0, source
• 80s: Commodore 64 — Evan-Amos, Public domain, source
• 80s: Boombox — Smithsonian National Museum of African American History and Culture, CC0, source
• 80s: DeLorean — Berthold Werner, CC BY-SA 4.0, source
• 80s: Berlin — Sue Ream, photographer (San Francisco, California), CC BY 3.0, source
• 90s: Tamagotchi — Cpd1009, CC BY-SA 4.0, source
• 90s: Floppy disk — Jacek Halicki, CC BY-SA 4.0, source
• 90s: Nintendo 64 — Evan-Amos, Public domain, source
• 90s: PlayStation — Evan-Amos, Public domain, source
• 90s: Discman — Vogler, CC BY-SA 4.0, source
• 90s: Pager — Jorgebarrios, CC BY-SA 4.0, source
• 90s: Pogs — hkboyee, CC BY 2.0, source
• 2000s: iPod — Evan-Amos, Public domain, source
• 2000s: Nokia 3310 — Multicherry, CC BY-SA 4.0, source
• 2000s: Motorola Razr — Raimond Spekking, CC BY-SA 4.0, source
• 2000s: Nintendo DS — Evan-Amos, CC BY-SA 3.0, source
• 2000s: Wii — Evan-Amos, Public domain, source
• 2000s: BlackBerry — P2u111, CC BY 4.0, source
• 2000s: Crocs — Zhou Yuji1028, CC BY-SA 4.0, source
• 2000s: Segway — P e z i, CC BY-SA 3.0 at, source
• 2010s: Fidget spinner — Árni Dagur, CC0, source
• 2010s: Hoverboard — Soar Boards, CC BY 2.0, source
• 2010s: Selfie stick — Stephanie Kraus from Köln, Deutschland, CC BY 2.0, source
• 2010s: Loom bands — Abbys1, CC BY-SA 4.0, source
• 2010s: Nintendo Switch — Evan-Amos, Public domain, source
• 2010s: Amazon Echo — Asivechowdhury, CC BY-SA 4.0, source
• 2010s: AirPods — Maurizio Pesce from Milan, Italia, CC BY 2.0, source
• 2010s: iPad — Evan-Amos, Public domain, source