I just did a fresh breezy reinstall so I wrote down the dependancies needed to compile the deskbar applet :
build-essential libxml-perl python-dev python-gtk2-dev python-gnome2-dev python-gnome2-extras-dev evolution-dev somehow enables beagle support evolution-data-server-dev enables evolution support
then use the usual commands:
./configure --prefix /usr make
Then you have the choice between : sudo make install or: sudo apt-get install checkinstall sudo checkinstall -D make install (to produce .deb package) Type Deskbar Applet as description (so that it overrides breezy repositories version). ** I didn't do that in the packages I provided, my bad.
PS : For tomboy, I needed the following (you may need some from the deskbar applet dependancies too)
mono-mcs libpanel-applet2-dev libgtkspell-dev gtk-sharp2
Still no tomboy in the applet list though