I was saying earlier how I found it difficult to use my Japanese, stainless steel, insulated, multi-container food tote (looks like this) because the containers are not leak-proof, with the exception of the soup one. LunchInABox gives us the solution to this here: the clever ‘rice lid’ idea. Those who like their rice pure and unadulterated at meal time may not approve though :)!
Another idea introduced by LunchInABox is this link to a method of transporting small quantities of condiments using an ordinary drinking straw. Nifty. However if it’s just good old salt & pepper, maybe the traditional screw of paper might work just as well? Assuming there is lots of soggy food around to melt the paper and contents, that is.