I would be very likely to have it done if there was no currently broken glass in the windows (signifying "possibly" that your tenant does not value the property enough to be careful). 

So, I had electric and wood heat.Not sure if you can still burn wood where you are, but you could put in a simple hearth and a wood heater with a glass front, so it would double as a fireplace.  

It currently has a large playscape in the back yard with a swing, slide and all the bells and whistles.

The rents come to my personal residence either by mail or in person, they just slide it in my mailbox.

My lease says 35 per pet per month...but I'm a sucker for animals so if they have two pets I might let them slide with just the 35.

You are changing the thickness of the glass.  

They make padded toilet bowl pieces that are up higher and just slide over the toilet bowl as well to use if you want to go over a standard toilet instead of replace with a handicapped one.

My apartment only has sideways-opening windows or a sliding door to my balcony.  

@Jim K.Haha wouldn’t say drunk but after work with a glass wine or two reading up the forum and search for topics of interest that’s usually what I do.

@Shawn Westbrook my personal must-haves: skirt board ladder, left-handed hammer, glass hammer, lightning hammer (never strikes the same place twice), wood enlarger, nailing lubricant, and a rip saw with a pull chord.