False bottom drawers, a bag on a string in the bilge. Caution: we tried #2 for some cash and got some weird looks when, months later, we showed up at a bank in Florida with some moldy $100 bills!
How about hiding things in plain sight disguised to look not-valuable? I've heard of folks who cut the bottom off a soup can and fitted it out to store things like cash & jewelry and put it back in the locker with other canned goods.
Ultimately, your laptop is worth less than the data on it, so be scrupulous about your backups. We keep 2 external hard drives in different places so that if we lose the computer we still have all our pictures & notes, etc.