Lux IIIs are more effecient driven at a current level suited for Lux I, while their output sucks compared to modern day standards they do make pretty good for fixed lighting as upgrades usually don't occur until something burns out. As long as the tint is good it'll work, I once acquired about 20 Lux Is from someone who removed them out of lights, turned out they were all YA tints and the resultant light was horrible
If you don't want them I'll take them, I have plenty of xitanium 350ma drivers and plenty of dark places around the house that could use some light, even if its a night light.
a few good ideas would be mounting them on L brackets, or under U brackets and fitted with optics.
Easiest cheap worklight is using a copper pipe cap as a heatsink with the LED mounted on the outer end and inverted down to light a table. Drill a hole close to the lip of the cap so you can hang it on a nail. When I need to use the work bench all I need to do is fish out a couple ice cubes from my drink and throw them in the end cap, which is facing up. it'll keep the LEDs cool for awhile, and even when the ice melts entirely the water will prevent the LED temperature from exceeding 100C, if it does boil dry [which I've never seen happening] another ice cube should do the trick. I've since replaced my 3 "copper cap lights" with a fixture of 3x LuxV's, also salvaged and its been working since, no ice cubes necessary