Are you looking for particular types of valuable things?
Because I know plenty of people who bring valuable items into and out of their houses because of their professions, only they're not the "gold/jewels/antiques" type of valuables, usually. In particular, I work in film, and anyone in any position who brings tangible items to set is doing this all the time. For people who work off camera, like camera/sound/lighting people, this would be similar-but-not-the-same equipment all the time, which would be very valuable but might not look exciting enough for your purposes; for people who do anything seen on camera, such as props/special effects/costumes, items would differ every show -- but in both cases there are plenty of instances where people are carting large monetary values in and out of their houses. (I note, of course, that for things like props and costumes, the items would probably *look* more valuable than they are, but that might fit your purpose as well -- and a lot of times things are used for movies that do have quite a bit of genuine value. I also note that a lot of people work out of shops / production houses, but also a lot of people don't, or rent from a shop / house and keep everything in their own home for the duration of a shoot to be carted in and out every day.)
I also had a friend once who worked as a courier. I think it was mostly small items, however, and that part of the job was making sure no one suspected he had any valuables while he was transporting them (security through obscurity), so I don't know if that fits your scenario (it sounds like you're trying to make this visible for someone else to see it happening?).
ETA: Just saw your new post -- it doesn't sound like any of this fits your purpose, oops! What about -- I'm pretty sure there are professions where people have to take custody of large amounts of cash for a time, and would probably keep it in a safe -- would cash work for your purposes? It wouldn't be very visible going in and out, but if someone found out about it . . .