This is a stackable Benchy dry dock, you can also label the Benchy with which material you used.

You can also make the tags coloured so the text would stand out more

you can access all of the raw files in this Onshape link so you can make your labels or you can download the blank version in the files area

Link: https://cad.onshape.com/documents/160bc191a6090e5eb4ed400a/w/1b9708fd8bccafdd620acef6/e/c4edd49f110162c07a3fd49a