Far more sensible to forget such spite and work towards making money yourself . If you toss him a pile of Dogs its highly unlikely that hes just going to invest in those Anyhow .
Make a few million show it off with one nice purchase , say f%ck you , I dont need your pitance as its loose change to us anyhow . The moment of pleasure would be when he turned up on the doorstep asking you for a loan ! The answer would of course be NO !
As a previous poster correctly wrote , the whole child support system is completely up the creek . I had a neighbour , 3 kids , 2 kids full time with him , the third with the other half ..all under 16 years old , he was paying for the third ..every week . When the young girl realised it was better with the two boys , she moved in too . He had all the kids ! Never got a cracker , yet the woman was working .
Far better to have your own managable agreement , get your ex the pay something like school fees , some tangable . Then you might be able to get some money .