I've had a long time practice of putting all my projects in their own repositories and keeping them in a work directory under my home directory. I even start repos for personal projects as well as various of interest items. Smaller lists and plans go into more general repos and everything is organized and backed up in a source control system.
With this I've ended up creating various functions to help manage things. For example, the following update-work bash function goes through my work directory and runs the git status command in each directory which is a git repo.
function update-work {
pushd "$HOME/work"
for f in `find . -maxdepth 2 -name .git`
do
echo "--------------------------------------------------"
echo "REPO: $f"
pushd "${f%/.git}"
git status
popd
echo "--------------------------------------------------"
done
popd
}