What can/should I be teaching my tiel to do?

[Colorguarder08]

I have been waiting a little while to start any sort of training so she could get adjusted and to let us bond some. Well now it's time to start training. She already knows step up even though I don't tell her to I just put my finger near her and she steps up no questions asked. I will be starting to potty train her but I am fully aware that will be a long and difficult process as shes young and tiels need to potty every 20 minutes and I haven't found a treat she's crazy about yet. I've had a millet hanging in her cage since I brought her home and she has just started eating off of it the day before yesterday and there's still more than half of it left. So the only "treat" I would be able to give her is seeds which I prefer to give her as little as possible and hold them off for foraging treats. So what else can/should I train her to do.