xANDERssbb, if you do it on Yoshi, you will need to rename a few bones to make it match Yoshi's so you can avoid the running glitch, or at least rename Tails's BodyM to TransN. it will make him drop into the ground a bit, but that can be fixed with tweaking the animations a bit. i can send you the file i have if you want. and if you need any other help, just ask.
and TommoPuppy, it would be cool to have the spring bounce around, but i have no idea how i could do that, maybe PSA, but i'm not sure. and yes, it's a pink sandbag. i got an item recolor pack and they decided to make the sandbag female, hence pink with a bow. and you probably want to lick it because of its pinkness.