[Users] Container for features in a vector layer?

[Lukas Vonlanthen]

Dear List,
please excuse me if this question turns out to be rather silly - I am 
not that experienced yet with using GeoExt. Nevertheless, I managed to 
display all the map layers in a tree using a 
GeoExt.tree.BaseLayerContainer and a GeoExt.tree.OverlayLayerContainer. 
One of these overlay layers is a vector layer, where the user can add 
some features he/she wants to see on the map. And I'd like to show all 
these features separately in the same map-layer-tree as all the other 
layers.
So this is basically my question: is it possible to display all the 
different features of one single vector layer in a tree? I imagine it to 
be something similar to a OverlayLayerContainer but focussing only on 
one VectorLayer.
I managed to work something out by creating a new vector layer for each 
feature but this doesn't seem to be a good solution since I've read 
somewhere that a vector layer needs to be activated to allow a selection 
on the map. And I'd like to be able to select all the features a user 
has put on his map at the same time.
Any thoughs or help on this is very much appreciated. Many thanks in 
advance!
With best regards, Lukas