I've seen some signs saying "I Appreciate You" from Isobel, and the dreadful donation system that lets him leave you gifts. What if it could be the other way around?
For example, if Isobel is standing staring at you, there could be a chance that if you hold a flower, he will let you approach him, and you can give him the flower. And he'd actually pick it up. Maybe you would be able to see that flower in his hand too. Some way to develop a positive relationship with him. Perhaps if you keep giving him flowers, cookies, nice little gifts, and be kind to him, he'd start returning the favor. It could work like dreadful donations, but sweeter/more useful, but I have an idea too.
Imagine this: You're building a house. You're running low on Deepslate in your inventory. Suddenly you turn around, Isobel is there, and he looks directly at you before tossing anywhere between 1-64 pieces of deepslate on the ground,and then either vanishing, or running away.
I thought it would be cute if once you befriended him, he'd try helping you to build. Maybe if there's a way for him to scan your entire inventory and see what you're low on? Or maybe even scanning surrounding chests/shulkers?

