That component to DVI-I cable was also used the other was around, for projectors who lacked a component input but could receive component signals through the DVI-I connector. It need to be supported though by the projectors chips and enabled through a menu. It is a pretty useless cable for regular appliances, since most devices do not support such a configuration and there is no signal conversion involved. Those cables were pricy though when bought in brick-and-mortar stores. It might be worth putting it onto eBay, but beware of unknowingly buyers who might wrongly assume this cable would include a signal converter.
Ah yes, the other little breakout thingy, I used those for getting S-Video out of my old PC's AGP graphics card to have Youtube and PC games on my CRT TV, back in the day where smart TVs weren't the norm. My friends thought this was quite impressive. As with the other cable above, this is just a simple adaptor for devices that specifically support it, but no signal converter. These were mostly packed with graphics cards.
If not eBay, why not raffling them away instead of binning?