De or het stapelbedje?

The correct Dutch article is:

het stapelbedje

Rule Diminutives (-je, -tje, -pje): always het. See the rule

This word is not in the word lists we use to double-check answers.

How to use stapelbedje

the stapelbedjehet stapelbedje
this stapelbedjedit stapelbedje
that stapelbedjedat stapelbedje
our stapelbedjeons stapelbedje
your stapelbedjejouw stapelbedje
every stapelbedjeelk stapelbedje
which stapelbedje?welk stapelbedje?
a big stapelbedje / the big stapelbedjeeen groot stapelbedje, het grote stapelbedje