My favorite token generators (in no particular order):
Saproling Burst
Spontaneous Generation
Saproling Symbiosis
Deranged Hermit
Squirrel Nest
Call of the Herd
Acorn Harvest
Beast Attack
Verdant Force
Verdeloth, the Ancient
Nemata, Grove Guardian
Saber Ants
And as a bonus, a deck that I used to play:
4 Kyren Negiotations
3 Goblin Bombardment
1 Fireball
2 Nemata, Grove Guardian
4 Deranged Hermit
3 Acorn Harvest
3 Saproling Symbiosis
3 Spontaneous Generation
4 Wall of Blossoms
3 Spike Feeder
4 Birds of Paradise
3 Spike Weaver
2 Verdant Force
3 Gaea's Cradle
6 Mountain
14 Forest
The deck's really simple. Just make a bunch of token dudes and tap them to deal damage through Kyren Negiotations. The Bombardments are there to help you deal with pesky creatures and you can always attack with your dudes in case they have an Ivory Mask. You can almost always chump block any attackers and the Weavers can help in the early game and against tramplers. The Feeders can give you extra life in an emergency.
(- Steve -)