Start with the real thing.
Measure a relaxed insert, its surface details and every little protrusion.
THE LITTLE KEEPER COLLECTION
A happy place
for your squishy.
Your favorite little squish. A case in your favorite color. A place to tuck it away until your next little pause.
Find your little keeperOriginal case concepts, inspired by the shapes you love.
Choose your shapeMake it your colorOpen. Lift. Squish.
A SIMPLE LITTLE IDEA
A keeper for the in-between.
Imagine a smooth, colorful clamshell that gives your squishy its own place on your desk or in your day. Open the case, lift the insert out, and enjoy the squish in your hand.
01 Open the shell02 Lift the insert03 Squeeze freely
FROM THE DESIGN WORKBENCH
A rounder little keeper,
taking shape.
Here’s the current small cube case, shown from its actual design model. The rounded shell, revised hinge and closure are being developed for the next physical sample.
Design prototype · C2 revision
This revision has not been printed or fit-tested. The drawings and concept images are different stages of the idea, not proof of a finished product.
FIND YOUR FIT FAMILY
Little shapes. Big personality.
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THE HEARTFELTLY PART
A familiar squish.
A personal little home.
We’re exploring original cases around real, purchased inserts. The shape starts the conversation. Your color makes it yours. Physical prototypes tell us what actually works.
See the path to a real keeperPrint. Check. Refine.
Try clearances, smooth the contact surfaces and test the opening by hand.
Your color, your little ritual.
Explore shell colors now. Optional names and UV details come after fit and finish tests.
BEFORE A CONCEPT BECOMES A PRODUCT
Thoughtful in every little detail.
Room to be soft
A case must hold the relaxed shape without pressure. The rigid shell opens before the insert is squeezed.
Gentle where it touches
Rounded edges, smooth cavities, an external latch and a seam that stays clear of the insert.
Easy to take out
Repeated opening, removal and cleaning checks come before a design is offered for sale.
Research, brand references & prototype status
These are original Heartfeltly accessory concepts for independently purchased inserts. NeeDoh is a Schylling brand. Product names identify the intended research subject; no affiliation, endorsement or verified compatibility is implied. The inserts shown in our original renders are abstract stand-ins, not official product photography. Catalog presence does not establish stock or a discontinued status.
Body sizes are manufacturer nominal dimensions where explicitly identified. Unspecified specifications and packaging dimensions are kept separate. None is a final inner-cavity dimension. No case has been measured, printed, fit-tested, safety-certified or cleared for sale. Follow the original insert’s care and age guidance; this concept adds no safety certification.
Open the main source catalog ↗ · 2026 seasonal source notes ↗