I have an old locking tape case for a betamax tape. No one knows what it is anymore, and whenever any gamers want to borrow dice, I tell them it's an intelligence test to open the case (for some reason the first time they try it, it stumps otherwise intelligent people.)
You say you're looking for a dice case - what in particular are you looking for? There are lot of places to get dice pouches, maybe from a variety of fabrics or chainmail. Many gamers buys the matched sets int eh tubes or small clear plastic boxes. Wooden boxes are easy and cheap, just go to a garage sale. Basically, what are you looking for in a dice box?
Cheers,
Blue