What is the present tense of the word wander?
Depending on the person of the verb. 1st person spoken would be 'i am wandering' but if you use the verb to have as the main verb and have wander as a noun you could also use the following - 'i am having a wander.'
Its use as a verb will be most like Wandering in present tense.
As a noun it will usually be Wander.
Hope taht helps.