The least expensive option would be
Edge Tamers on your bucket. I've used my knock-off's to scoop up limbs. They work better on tree limbs than they do on leaves, but they will get the majority of leaves, if they are thick. They will not gouge up your grass/soil, as the skis keep the cutting edge off of the grass/soil, unless you tilt your bucket too far down.
The trees on my 2.5 acres are 150-200+ years old, with multiple large trunks out of the same base, and several trunks have broken entirely off (a few trees need to be taken down, before they fall down...). I use my Edge Tamer knock-off's to skim the larger branches into a pile, on the edge of my property. The bigger ones, I cut up with a saw, load into my truck bed, and haul to the fire pit.
The bigger pile of brush and branches, makes for critter habitat, on the edge of the woods, at the base of a hill. The Edge Tamer's work best for snow, second best for tree limbs, and dead last for leaves, but better for thick layers of leaves (we rake, by hand, after the tractor, if necessary). Cheers!