I currently have 3 flashlamp pumped lasers that I am working on:
Eclipse Medical Laser (Flashlamp Pumped Ho:YAG)
SSY-1 Rangefinder Laser (Flashlamp Pumped Q-switched Nd:YAG)
VersaPulse Medical Laser (Flashlamp Pumped Nd:YAG)

A few gas lasers:
ALC-60X Argon-Ion Laser
California Laser CO2 Waveguide Laser
Synrad D48-2 CO2 Waveguide Laser
Teletrac 150 Stabilized HeNe Laser
Laser Physics Reliant 300wc Whitelight Argon/Krypton Ion Laser

As well as a few RGB lasers that I have built:
RYG laser I
RGB laser II
RGB laser III
RGB laser IV new!
RGB laser projector I
RGB laser projector II new!
RGB laser projector III new!

And a few diode lasers that I have been working on:
Coherent Avia Thor (Q-Switched Frequency Tripled Diode Pumped Nd:YAG - doing 40w of 1064nm!)
DPSSFD YAG laser (Frequency Doubled Diode Pumped Nd:YAG), never made it past the drawing stage
Mystery 2w 532nm Medical Laser
Coherent FAP (Fiber Coupled Diode Laser)
808nm Diode Bars
Laser Export LCM-DTL-347QT QSFTDPSS YAG Laser (Q-Switched Frequency Tripled Diode Pumped Nd:YAG)
LaserWave 473nm FDDPSS Laser (Frequency Doubled Diode Pumped Nd:YAG)
Lightave 210G QSFDDPSS YAG Laser (Q-switched Frequency Doubled Diode Pumped Nd:YAG)
KES-400AAA, the optical sled out of a PS3 console (disassembly)
445nm diodes found in new DLP projectors

Some thoughts on mounting bare laser diodes
Diode Mounting