theoretically, and, of course, for informational purposes only...
the tea pitcher will work just fine. the hcl and the i2 don't eat through or usually leave a stain on the plastic vessel. bee sure to purchase some of those plastic quick cover gripper things - if there's not something covering the vessel, the tincture dye will spread itself everywhere in the xtraction room. as was previously suggested, wally's chlor out (aquarium section) and a sponge gets the dye right off.
plastic gloves used to prepare will be coated in purple/black dye. either keep these some where else and safe or throw away - this is obvious evidence not worth keeping around.
plastic funnel also should be just fine.
for more notes, see geez's recent i2 post, right around here in the stim. forum. have phun.