noun
doodad
DOO-dad/ˈdudæd/
A small object whose name is unknown or unimportant.
I keep this little doodad in case I need it.

Etymology
Doodad was made up as a name for an unnamed thing. Its usefulness lies in standing in for a specific name, rather than describing the object.
In context
Then with a wide putty knife, I split each doodad in half thru the craft paper.
More examples
- What does that plastic doodad on your key ring do?
- She decorates her desk with colorful doodads.
- Some tiny doodad fell out when I opened the remote.
Forms
doodad · doodads
Similar words
- doohickey
- Often suggests a small device or mechanical part.
- thingamajig
- Can name an unfamiliar object of any size.