Possible Clues:

• Father has unusual items offering interest
• Hobby of dad's generation?
• Quilting or crossword solving, e.g
• Hobby for which I'm covered in glue!
• Stick about the compiler's crosswords perhaps
• Recreational activity
• Get stuck going round flipping motorway diversion
• I am covered in glue -- it's my hobby
• Recreation
• The old man's session doing the crossword, say