listings
listings
people
Log in
|
Sign up
POSH MARKETS
All
Women
Men
Kids
Home
Electronics
Pets
Beauty & Wellness
Brands
Parties
Posh Shows
How it works
Sell on Poshmark
Home
K'Nex
K'Nex Kids
categories
All Categories
Women
Men
Kids
Accessories
Toys
Home
Pets
Electronics
size
Select a category for specific sizes.
color
All Colors
price
All Prices
Under $25
$25 - $50
$50 - $100
$100 - $250
$250 - $500
Over $500
Custom
To
Apply
shipping
All Items
Free
Discounted + Free
condition
All Conditions
New With Tags
availability
All Items
Available Items
Available + Dropping Soon Items
Dropping Soon Items
Sold Items
Not for Sale
K'Nex for Kids
Follow
K'NEX International Space Station 15118 Complete w/ Instructions & Storage Case
$60
One Size
K'nex Raptor's Revenge Roller Coaster Building Set Over 2' Tall
$29
$999
OS (Boy)
K'NEX Super Mario Koopa Troopa 2-Inch Minifigure [Loose]
$12
OS
K'NEX Super Mario Gold Mario + Peach Figures Lot Used As-Is
$11
OS (Baby)
5Star-TD K'NEX Nintendo Super Mario 3D Land Prongo Building Set
$43
OS (Baby)
K'NEX Thrill Rides Clock Work Roller Coaster Building Set 15406
$25
$25
OS (Boy)
K'Nex Thrill Rides Mecha Strike Roller Coaster Building Set 18515
$35
$35
OS (Baby)
K'NEX 61001 61008 Building Sets Helicopter Race Car 2 Pack Sealed New
$20
OS (Baby)
K'NEX Building Set
$15
OS (Boy)
K'nex Building Toys
$40
OS (Boy)
K'NEX + Storage Case
$15
OS
K'NEX K'Nexosaurus Rex Building Set - Green
$25
No size
K'NEX Lot of assorted pieces With 8 K’nex People
$25
OS (Baby)
K'NEX Wario Figure
$13
OS (Baby)
K'NEX Mario Figure
$13
OS (Baby)
K'nex Building Set with 35 Models
$30
OS (Boy)
1997 K'NEX hard plastic Case
$12
OS (Boy)
K'NEX 128 mm rods red, tan, grey
$70
OS (Baby)
K'NEX 32 mm rods white black gray
$40
OS (Baby)
K’NEX Lot Knex Rods Connectors Wheels And vintage K'NEX Robot Figures
$39
OS (Baby)
Vintage K'NEX Yellow Box Hard Carrying Case With A Bunch Of K'NEX Pieces 1992
$16
OS (Baby)
K'NEX 54mm rods blue, lt blue, gray
$30
OS (Baby)
K'NEX connector4-way 3D purple grey
$75
OS (Baby)
K'NEX Red Shy Guy Figure
$13
OS (Baby)
Large Lot K'NEX Building Pieces 5 lbs
$25
OS (Boy)
Vintage 2000 K'Nex Playset & Case
$25
OS
K'NEX 190 mm rods, grey, black, orange.
$45
OS (Baby)
K'NEX 3 way connector red, bright red, grey
$65
OS (Baby)
K'NEX Ultimate 100 Model Building Set - 863 pieces
$22
$50
OS (Boy)
Vintage K'NEX | OEM Authentic Lot of Assorted Gears
$35
$50
OS (Boy)
K'nex Mario Brothers Mario Cart Bike Building Set
$18
OS (Boy)
K'nex Ferris Wheel 478 pieces #12078 With Motor Complete
$37
OS (Baby)
Vintage K'NEX 10th Anniversary Special Edition Building Set
$25
O/S
K'NEX Collect & Build Red Semi Truck Motorized Building Set
$30
OS (Boy)
2011 K'NEX Super Mario Bros Loose Figure Nintendo
$10
2.25" Tall
K'NEX Thrill Rides Space Invasion Roller Coaster Building Set
$25
$60
No size
K'NEX Wild Whiplash Motorized Roller Coaster Building Set
$39
One Size
K'NEX Education Introduction to Bridges Set With Plastic Case
$29
$40
Age 8 and up
K'NEX Metallic Blue Clip OEM 190 Piece Lot Classic Size
$40
OS (Baby)
K'NEX Lincoln Logs Lot of 8 Replacement Dark Brown Train Tracks
$24
OS
K'Nex Rippin' Rocket Roller Coaster Building Set 63166 / 63105
$75
OS
K'Nex Classic Red Storage Case with Mixed Parts Expansion Stash
$20
14x10x3.5
K'NEX Nintendo Super Mario Replacement Figures - Mario and Luigi
$16
OS
K'NEX Large Figures Riders Replacement Parts Lot Of 5 Knex
$21
OS (Boy)
Kid K'nex Sesame Street Ernie Building Set 15 Pieces - Complete
$22
OS (Baby)
K'NEX Nintendo Super Mario Replacement Bowser 2.5" Mini Figure #7
$15
OS
Vintage K'Nex Supernova Blast Roller Coaster Glows In Dark Rare
$56
OS (Boy)
Mixed Lot of K'NEX Nintendo Super Mario Replacement Figures 15+
$38
OS
Prev
1
2
3
4
5
Next
![K'NEX Super Mario Koopa Troopa 2-Inch Minifigure [Loose]](https://di2ponv0v5otw.cloudfront.net/posts/2026/08/06/6a750527848748bb7a6cd3f8/l_6a7505284fcf2607046b7e6c.jpeg)
