Question about Logitech Crayon

yes, you can do that - if you get replacement tips. But digitec doesn't seem to have them.

The tip is absolutely identical in construction to the Apple Pencyl! So you can also use the Apple tips...

Technical information on the pen tip can be read here: https://www.logitech.com/de-ch...

Replacements seem to be available only in packs of 10: https://support.logi.com/hc...