Can I Brew Tea in AeroPress coffee makers?

Yes, using the inverted method. Insert the plunger an inch or so into the chamber and then set the AeroPress coffee maker on a counter with the plunger down. Put the tea into the chamber, pour hot water into the chamber, and let it steep. When ready, put a filter into the filter cap, screw the cap onto the chamber, carefully invert it onto your mug, and press. Be advised that using the inverted method may increase the risk of spilling hot water and the risks associated therewith.