You cannot buy happiness but you can buy Fishing Tackles, that's pretty much the same thing!
Hammerhead C-CUP 115g Popper
Hammerhead D-CUP 135g Popper
Hammerhead E-CUP 145g Popper
Hammerhead I-CUP 215g Popper
Hammerhead Shakure 135 SUS Swimming Popper