AI · alternatives · 2026

24 alternatives to Marble Run DIY Waterwheel Toy

Stylish Rokr Wooden Model Building Block Kits Assembly Toy

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Marble Run DIY Waterwheel Toy launched in 2021; newer entries below may have overtaken it.

1. 1IB
   I built a Guitar Hero robot [video]▲328

   2021 · youtube.com · its alternatives →

2. 2
   Classic DIY Movable 3D Car▲10

   Wooden Model Building Kit Assembly Toy Gift for Children

   2021 · its alternatives →

3. 3RM
   Roons – Mechanical Computer Kit▲203

   I built a mechanical computer kit: https://whomtech.com/show-hn tl;dr: it's a cellular automaton on a "loom" of alternating bars, using contoured tiles to guide marbles through logic gates. It's not just "Turing complete, job done"; I've tried to make it actually practical. Devices are compact, e.g. you can fit a binary adder into a 3cm square. It took me nearly two years and dozens of different approaches. There's a sequence of interactive tutorials to try out, demo videos, and a janky simulator. I've also sent out a few prototype kits and have some more ready to go. Please…

   2025 · whomtech.com · its alternatives →

4. 4SM
   Shoggoth Mini – A soft tentacle robot powered by GPT-4o and RL▲610

   2025 · matthieulc.com · its alternatives →

5. 5
   Flybrix▲112

   A crash-friendly, rebuildable drone made from Lego bricks

   2016 · its alternatives →

6. 6
   I'm a 15 Year Old Wannabe Engineer, This Is a Cycloidal Gearbox I Built▲338

   3D Printed Cycloidal Gearbox . Contribute to tom-ilan/cycloidal_gearbox development by creating an account on GitHub.

   Aug 2026 · github.com · its alternatives →

7. 7
   DeskHog▲480

   A developer toy from PostHog

   2025 · posthog.com · its alternatives →

8. 8
   Marble by World Labs▲130

   A frontier multimodal world model

   Nov 2025 · marble.worldlabs.ai · its alternatives →

9. 9
   WooBots by Bamloff▲132

   Transformable wooden robots

   2015 · its alternatives →

10. 10
    Pok Pok Playroom▲91

    Handcrafted toys for kids to spark creativity & learning

    2021 · its alternatives →

11. 11
    BrickLink▲166

    Showcase, buy, and sell custom LEGO models

    2014 · its alternatives →

12. 12
    Toybox - Open Beta Edition▲136

    3D print your own toys

    2017 · its alternatives →

13. 13
    KT2 Kungfu Turtle Robot▲129

    The broke man's Boston dynamics

    2024 · its alternatives →

14. 14
    Toy Maker by AstroPrint▲127

    3D print toys in your living room

    2017 · its alternatives →

15. 15SA
    Stdcore, a toy container library▲54

    2017 · nedbingham.com · its alternatives →

16. 16
    SwapBots▲77

    Augmented reality toys for creative play

    2017 · its alternatives →

17. 17
    Toyish Labs▲79

    Ever-changing toy for creative kids

    2017 · its alternatives →

18. 18
    Tubey▲115

    Your own personal car dealership mini flailing tube desk toy

    2018 · its alternatives →

19. 19
    Bakiwi▲69

    The fabulous DIY walking robot kit

    2021 · its alternatives →

20. 20ΛB
    λ Bubble Pop, an educational toy built using λ Lessons▲83

    2014 · chrisuehlinger.com · its alternatives →

21. 21
    Flat Pyramid - Marketplace for 3D Models▲140

    Get 3D models for your projects, designs and games

    2019 · its alternatives →

22. 22
    RaceYa▲129

    Customizable race cars for STEM

    2018 · its alternatives →

23. 23
    stud.io▲72

    Build with LEGO online

    2016 · its alternatives →

24. 24AS
    A simple image puzzle generator▲56

    Hey HN, I built this simple puzzle generator to play around with wasm a bit. It's open source if anyone wants to play around with the code https://github.com/lnenad/puzzlip

    2024 · puzzlip.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →