Joseph,Pet wash can make money if you treat it like a car wash (coin operated), same with pet vending machinesMeeting room/cyber cafe/work stations that they must reserve for a feeExtra storage for packages for tenants amazon packages with locked lockers(maybe a parcel company will pay you to put one in) I think Amazon.com does this, but only for their packagesRent out to someone for Yoga classes2 Tiered bike park/store systemTutor area for kids afterschoolAll of the above ideas depends on what type of tenants and community and area your property is located

Bongs on the table, clothes, food, garbage everywhere.

We returned to her some mementos, clothing, and the kids favorite toys.

I'm interested in learning about taking a lease for a space that I would in turn sublet for yoga/pilates/fitness classes, rehearsals, workshops, etc. 

Get caught and you may get a free place to live , meals included , they even give you great looking clothes 

Most of these houses lack insulation, have old single pane windows, have galvanized/copper/cast iron/PVC plumbing all in the same house, post-n-knob electric or cloth wiring or both, and lots of bad remodeling done over the years.

The retail strip where I was a tenant had a Dress Barn and another clothing store (can't remember the name) move out. 

Those guys are a dine a dozen and their clothing is always spiffy.

I once emptied a storage unit full of clothes and such and brought the contents into my home only to quickly discover that I’d also brought a mouse in with the stuff.

They trashed the place , stole mothers clothes , all fathers tools , soaked the carpets with beer , broke furniture .