Infuser suggestions

I am planning to buy a good air pot, such as a Zojirushi

for making 6-8 cups of tea for the office.

My plan is to make it right in the air pot. Since none of them come with an infuser, I'll need to find one that can handle roughly 3g of leaves for each cup (8 oz). For an 8-cup (48 oz) air pot, that would be 24 g of tea.

Any suggestions for the infuser?

There are several on this page that look promising

including the 003132, D-93998, and 003120.

I wonder how a cloth tea net would work:

This eBay vendor has a large selection of stainless steel ball infusers.

This one got great reviews on Amazon, but it doesn't say the dimensions

Any other suggestions?