All part can be printed without supports and without color change mid print. You only need red,green and another color filament. tolerances are critical for a smooth snappy operation of the checkmark switch. No glue or screws are needed, Everything snaps in-place and the magnets are loose between the parts.

It is best to first print the parts for the test/fidget assembly to test if the operation is good.

For the complete checklist model you need 15 2x5mm magnets and 5 25x76mm whiteboard labels

Round Magnets: 2mm thick and diameter of 5mm

Whiteboard Labels: LLPT Whiteboard labels 2,5 cm x 7,6 https://www.amazon.nl/dp/B0CS9KGDM1?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

Designed with onshape:

https://cad.onshape.com/documents/29ac2ab41de8972d079ae076/w/ff07997fa0c2bb8f902d9798/e/01c21c89ff7ec19c973d8fed