Ball python or hognose

[Craiga 01453]

I think you'll find either a BP or a hognose would be a good second snake. A King might be great too. It depends on what you want though...

BPs are very docile for the most part, however, there are some rare BPs that just don't handle well.

Hognose are also extremely docile and easy to handle. They are often huffy and will hiss a lot when young, but outgrow that quickly with proper care and handling. Biting is extremely uncommon, but they are a rear fanged animal wild an extremely mild toxic saliva. If bitten, some people experience minor swelling and complications, but nothing major. Biting is their last resort though. They will usually huff and hiss, maybe musk, then possibly thrash around a bit but not bite at all. After that, they may "play dead" by rolling over onto their backs and laying motionless with their mouths agape and their tongue hanging out. After all this, if they are still feeling threatened then a bite will most likely be their last resort.

Kings are known to be a bit nippy when young, but are very easy to handle and extremely docile as well.

It also depends on what type of activity you're looking for...
BPs are commonly nicknamed "pet rocks" because they spend the vast majority of their time in their hides. They are nocturnal and will explore a bit at night. With proper care, however, you won't see your BP much at all during the day. "A hiding ball is a happy ball"

Hognose are diurnal and therefor very active during the day. They like to explore, burrow, etc... and will be seen more during the day.

Kingsnakes are crepuscular, which means primarily active around dawn and dusk. I've noticed that mine is active when he feels like being active, but he is a fairly active snake. He's the only snake I've ever had that actually tries to climb onto me to be handled when I reach into his enclosure, he'll climb right up my at, even if I'm just going in to spot clean or change his water or something. On the opposite side of that, though, he's a complete jerk when he's going into shed and throughout the process. I just leave him alone when he's in shed anyway.

So, you've got choices depending what you're looking for.
I have a corn as well, and I think that Kings and corns are very similar, but I personally have always loved Kings, they are my favorite snakes so far.
BPs are definitely very different from corns, but in a good way. They at SUPER chill. SUPER easy to handle, and usually SUPER docile. Their husbandry can be a little less forgiving than the others though, and tricky eaters are more common with BPs than corns and Kings. I don't own a hognose, but have been around a handful and am currently snake-sitting a hognose. The owner is a friend who bought the snake from another person who got rid of it cause it wouldn't eat. My friend couldn't get it to eat either. So over 6-8 months, this snake never ate. Came to me about 6 weeks ago at 11 grams and about 9 months old, TINY!!! Anyway, she asked me to take him for a while and try to get him eating. Well, I fixed his husbandry, left him alone and what do you know, he ate the first offering. He has eaten 4 times in 4 offerings since I have had him and he is scheduled to eat tonight. I guess my point is, hognose hatchlings and juveniles can be picky eaters too, but with proper care and husbandry you shouldn't have much trouble once you get them started. Something tells me I'm going to end up adopting this little hognose, which will be fine with me!!

Anyway, I hope this all helps a bit! Feel free to ask any questions you may have.
Good luck!