I'm short on space, too. My computer is mounted right on the stem (looks like yours is, too), and I have bell that's mounted on a spacer ring (from Velo Orange, I think), so my handlebars have my ergon grips, brake levers, grip shifter, phone mount, and back-up headlight/flashligh (Twofish flashlight mount--my primary headlight is crown-mounted). The fat shifter, which is the only shifter which will work with my hub, is a special nuisance since it can't be removed or relocated and it it interferes with me grabbing my albatross bars at the bend. I don't have a good solution beyond a 2nd stem/bar. I've considered it, but in the end, by getting the bell off the bar and on to the stem, and getting the light mounted elsewhere, I'm out of ideas. One thing I've been thinking of is removing the computer entirely, since I rarely use it, and mounting my phone mount on the stem. Of course if you weren't looking for a place to mount a phone, that probably wouldn't help you.