Manage their properties Provide welcome gifts/ goodie bags for their guests before check in Hauling extra supplies/ misc items to return to stores or other properties--Any other ideas that I can pitch to make myself more marketable?

Without the tenant explicitly stating (preferably in writing) you can trash whatever is left, you likely have a requirement to store items left behind. 

Meaning you'll have to store their property.

I've held onto it mostly because of the appreciation and great tenant.My main goal with RE is using it as a store of wealth and passing it onto my kids.  

Quote from @James Zobrisky: What is everyone's best advice for where to store your cash flow.

Unless you supply the 3M ones I guarantee the tenants are going to use the Dollar Store ones that leave torn paper everywhere. 

If you would like to generate your own leads, I would pop over to the the wholesale section of the forum and start there, and perhaps purchase some books from the BP store.

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

A $10M project repurposing a former grocery store into a dynamic dining and social hub in the heart of FUSE.🚀 Big things are happening in Gastonia—what are your thoughts on these developments?

Sometimes tenants do something that attracts pests (eg food is improperly stored, trash and food are left out, etc.