yossi, I usually use a regular tea bag. Like a lipton one or some other brand. As long as it isn’t a fancier tea, most regular tea bags brew a fwe pots of tea, not just a cup. I used to just put the tea bag in the coffee spot, but I found the tea bag got pushed aside by the water flow and wouldn’t necessarily get tea. So its better to put in the filter.
Although, I use a gold filter, not a paper one.