There are endless possibilities to making things with wool. Making vessels is one of them. Have a look on Pinterest and see what people are making. There are some stunning pieces out there. The vessel above is the first one I ever made.
There is only one really good YouTube tutorial and that is by Living Felt. There is a good internet version by RosiePink, and a book by Mette Ostman called Felted Vessels. The methods are similar, but there is nothing like watching someone actually do it. I have also read some blogs but they just show part of the process. Surprisingly, there is little out there in the world wide web on how to actually make wet felted vessels, but there are many inspiring photos of them.