Come back to them in two hours and they will give you the backpack addon.
Player: Hi Lubo: Welcome to my adventurer shop, player! What do you need? Player: Addon
Lubo: Sorry, the backpack I wear is not for sale. It's handmade from rare minotaur leather. Player: Minotaur Leather
Lubo: Well, if you really like this backpack, I could make one for you, but minotaur leather is hard to come by these days. Are you willing to put some work into this? Player: Yes
Lubo: Alright then, if you bring me 100 pieces of fine minotaur leather I will see what I can do for you. You probably have to kill really many minotaurs though... so good luck!
Lubo: Welcome to my adventurer shop, player! What do you need? Player: Backpack
Lubo: Ah, right, almost forgot about the backpack! Have you brought me 100 pieces of minotaur leather as requested? Player: yes
Lubo: Great! Alright, I need a while to finish this backpack for you. Come ask me later, okay?
If you return before 2 real life hours have passed
Lubo: Uh... I didn't expect you to return that early. Sorry, but I'm not finished yet with your backpack. I'm doing the best I can, promised.
Lubo: Welcome to my adventurer shop, <name>! What do you need? Player: Addon
Lubo: Just in time! Your backpack is finished. Here you go, I hope you like it. Player: Bye
Lubo: Good bye.
Hanna (or Norma) will make the hat for you, but they need certain materials first.
Give her the items you have collected, and she will make the hat for you.
Player: Hi Hanna: Oh, please come in, player. What do you need? Player: Addon
Hanna: Pretty, isn't it? My friend Amber taught me how to make it, but I could help you with one if you like. What do you say? Player: Yes
Hanna: Okay, here we go, listen closely! I need a few things... a basic hat of course, maybe a legion helmet would do. Then about 100 chicken feathers... and 50 honeycombs as glue. That's it, come back to me once you gathered it! Player: Bye
Player: Hi Hanna: Oh, please come in, player. What do you need? Player: Hat
Hanna: Oh, you're back already? Did you bring a legion helmet, 100 chicken feathers and 50 honeycombs? Player: Yes
Hanna: Great job! That must have taken a lot of work. Okay, you put it like this... then glue like this... here! Player: Bye
Hanna: Good bye.