Update: 25/07/2024 Since being pulled up by the grammar police, i have now removed the (') apostrophe from the "Years" All files have been updated.

A simple "Arrow" style design i made using Tinker CAD. I wanted some 3D markers for a height chart i have for my daughter. I made a hole in the back to fit some small magnets to allow them to just snap right to it. They could also be used as fridge magnets or with a command strip cut to size to stick them to any surface for any significant milestone markers. I chose to print them in a single colour and paint them afterwards.

The magnets i used were a small 5 x 3mm magnet widely available, they simply push fit into the hole with some force, no glue necessary. Link to the magnets i used below, however feel free to buy whatever brand you like.

https://www.amazon.co.uk/dp/B0BTLPTRSG?psc=1&ref=ppx_yo2ov_dt_b_product_details