I havent been here long enough for a loyalty box, but when I finally get one I'll get a pet slot, because of the previously stated reason of that being the only one I can't get somewhere else. :)
I get pet slots every time. Because I have problems.
I have four in my inventory, I guess my plan was to keep them until I decide to go for the Massive Family achievements but I didn't want to use them on pet slots because I might suddenly want a GA for three months or a petname change or a username change. Ugh. Now they're just sitting there. XD
in my opinion nothing is as valuable as the pet slot. everything else can be obtained in alternate ways by earning enough sp or buying csc, but when it comes to pet slots, once you're maxed out, loyalty boxes become the only way to get more (aside from the occasional event). that said, those event prize slots plus the ten from the millionaire center are probably enough for the average user, so of course it's up to how much an individual user feels like they NEED more pet slots in the end.
I've used them for pet slots and gold accounts mostly. :)

I always choose the pet slot, whether I have a pet I plan to get or not. It's just always great to know I have one ready to go.
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I always go for pet slots even though I don't do much with my pets. They're still fun to look at lol. :P
new pet slots!
check me out on .bsky.social">Bluesky & ">Mastodon!
Pet slot for me. Everything else I can buy whenever I want.
I have six just sitting lol. Used one today though to change a pet to Spectrum.
i get the potion
Thanks for all the input everyone! I'm gonna just hold onto them for now. I'm really wishing I had popped in during black Friday for a bit of extra CSC, but I think either way I'm gonna buy my GA for now. The pet slots do sound enticing, if for no other reason to get a number that works with my OCD, lol!
Speaking of pet slots, did I read somewhere that there's an item in the millionaire center for pet slots?
This response may be -checks time stamp on your post- 4 days late now, but I thought I'd answer your question about the MC pet slots, just in case you hadn't found the answer elsewhere.
You can purchase the Millionaire Center slots under its Pet Slots tab... They start at 20,000,000 sP and the price increases by 20,000,000 sP with each slot purchased. (In other words, slot 1 is 20 mil, slot 2 is 40 mil, slot 3 is 60 mil, and so on.) You can purchase up to 10 pet slots from the MC.
- sorry it's been a few days again for my reply, but thank you! I found where to get them, but didn't know how they'd increase, so that's helpful to know. I'm still good on slots, but I'll probably go that route first, maybe, I still don't know, lol.
Also, found that background, but it's got a password on it, I need to send the user a message, but I keep getting distracted lol!
If and when you want pet slots, it's worth it to go with them first and wait with the other options. It's the least expensive option. Even at their highest price, I'm not sure the MC pet slot is quite as much as a CSC purchased pet slot... What with the sP cost of CSCs these days. And of course, the loyalty boxes are one-use and once a year, so even if they are "free," it's still a high price to pay.
Anyway, I checked the Orb. The Orb of the Daring Spirits does not have a password on it. There are 8 orbs in total in that shop, 4 that are locked and 4 that are not. The locked ones are first on the list so you have to keep scrolling or use the find function of your browser. (On a regular PC, the find function is activated by pressing and holding CTRL than pressing F on your keyboard. I have no idea about how to do that on a tablet/smartphone, so I can't help if that's what you are using.)