Idk wat to gt my dad 4 X-mas?

im 13 and have a family of 7 and i got everybodys idea for christmas except my dad and im going shopping in a cuple days. my dads the only 1 i have no idea wat to get. I've looked up some ideas bt idk im lookin for somthin 30$ and under. thax for the help if u reply :):):)