I used the Impact Five-in-One Collapsible Reflector Kit with the gold/silver reflector for this road racing bike image for my cycling web site, in order to add fill light to the bike and to accentuate the carbon race wheels color difference. Details.
At about $95, it’s a great tool to have handy for portraits of any kind. The moderately large size is more useful than smaller reflectors.
The reflector is large enough that one can lean it on something, though ideally an assistant can hold it at just the best angle.
The black side can absorb or block light, instead of throwing more light into the sign. In snort, it’s a really versatile item.