Best toys for bored cat?

My cat Iggy is definitely too bored. He's almost 2, I've had him for about 6 months. I adopted him from a shelter that said they found him as a stray in the city. He's super cuddly and affectionate but lately he's just getting into everything and knocking stuff over!!

He loves his wand toy and laser as well as looking out the window or sitting on the porch. He has lots of catnip toys and balls to bat around but he wont play with those for long or by himself. He likes those little Hex bugs too but not the flopping fish robot toy.

Does anyone have suggestions for toys that are a hit with their cat? Bonus points if its something he can play with alone while I'm at work!