I’m collecting nearly everything (and that’s how it looks here, too ;-)) and from now on I will collect used tea bags, too, to make beautiful envelopes from.
I’m really curious about it. ;-))
On the photo you see my Rooibosh tea bags. I find that the Rooibosh tea gives the most beautiful colour, a very warm red-brown :)
By the way it must look great, too, if the tea bags are sewn together and/or if they are embellished after assembly, e.g. by embroidering, painting or stamping them.
Links:
Recycling Tea Bags into Art Projects: How to Create Tea Bag Envelopes
“Tea Ceremony” – sewn tea bags
(via Wewer Keohane)
Sas Colby Teabag Art Discourse – stamped tea bags
T-Bag – Tea Bag Designs – painted tea bags
Here at unikatissima: Paper Crazy Quilt – embroidered paper
Select appropriate paper sheets.
Roll and fold the paper sheets to paper strips of equal width (see 
Coil one paper strip firm around the glass and fix with tape.
Tape the hoop very well.
Slip the hoop over the glass again and coil the second strip of paper very firmly around the first hoop, tape very well, too.
These are both hoops, one can be slipped exactly over the other.
That’s the way everything looks from the backside.
I used a simple glass frame as seen on the second photo that I already had at home and glued a kind of 
