hello Lia , there are a whole slew of items you could get him.
a new coil for his machine or a new machine altogether ,
a new digging trowl or better yet a Lesche digging tool ,
a new belt pouch , some coin sleeves to store his better coin finds,
a subscription to any of the treasure magazines . any of these could be fine gifts for Father's day or just spending a few quality hours with the ol man detecting or otherwise would probably make him happy. My two Girls are 17 and 15 now but our tradition is spending Father's day morning picking fresh strawberries and I cherish many fond memories when they were very little doing this :yes:. Now that their teenagers and do their own thing for the most part I still look forward to Father's day and spending a few hours together doing this.
Dan