Hi hezzie!
I just take some dried red chilis (if you got more than one variety, feel free to mix them - I throw in some additional hot cayenne peppers), deseed them a bit (I feel the commercial products contain very often too much seeds, as filler - but if you want that, just don't deseed them at all) and process them in the electric coffee grinder I use for my other spices and mixes. (for less time, just a few seconds really) You can use a rolling pin, too! I also like to use these flakes instead of ground chili powder in a few dishes (:
For more spice, or flavour, but not necessarily heat per se, and not regarding curries in general, but salads, kebabs or starters/appetizers, I really like Chaat Masala, and just recently, Sumac (getting into persian and afghan cuisine lately ;P)
Read somewhere that you won't see shakers very often in real indian restaurants, no salt and pepper, because the cook assumes he spices everything perfectly, and it's seen as some sort of insult if you add salt or pepper afterwards. Don't know if this is true.