Where is ... / Where can I find ... / Do you have ... ?
If you cannot find an item or an apparatus, you can try to search for it in the search box
Apparatus will usually have multiple names to make it easier to search for, e.g. the bung can be found by searching for "stopper", "lid", "cover" etc.
If you still can't find your item, send us an email to firstname.lastname@example.org describing the item you are missing, its properties, and the experimental set up you were trying to draw.