Exactly what the title says. Now that we can roll dices in Kagi, I think Kagi could use a random number generator as well. Technically, rolling a dice is almost identical to a random number generator, but the main difference is that we can't set a lower bound. Also, the display for rolling a die is limited as big numbers get truncated (not saying that this is an issue with the die roll, simply that it's inadequate to be used as an RNG)

RNG in DDG: 
RNG in Google: 
It's interesting to note the difference in design between DDG and Google, in DDG we have to start a new search if we want to generate a new number while on Google the user can generate a new number without making a new search using the buttons in the interface (also the user can change the lower and the upper bound that way)