"The child wanted to have a drum."
Translation:Das Kind wollte eine Trommel haben.
That would be wrong, because "wollte" is what's known as a modal verb. The modal verbs are wollen, können, dürfen, mögen, sollen, and müssen. When one of these are used, the "zu" is omitted from the second verb just like the English modals omitt "to" from the second verb (I have to go vs I must go).