So my questions are more related to if I go on a per room basis and buy beds, my mom suggested buying mattress protectors and plastic sheets for the beds to protect them.

Hopefully it didn't crack in the bottom...when you install a fiberglass/plastic tub you are supposed to lay down a bed of mortar for it to sit in so it doesn't flex while you and a lot of water are in it

We thought we could just replace the plastic bubble on the skylight. 8 bolts, a new bubble, and we are down the road.

I've seen in very durable plastic with non-slip surface.. otherwise I'd replace each stair tread and then put this covering over it.. 

I would fill in with the solid plastic Restoration or similar, a can of non expand window and door spray foam and whatever it took for good looking trimA perfect DIY project for an hour or three. 

At first I was thinking about having it refinished but now thinking about replacement.Would you recommend plastic, fiberglass, or cast iron?

There isn't much cost between those and the hard plastic mirror hangers when its all said and done.    

We plastic wrapped the fridge and threw it into the dump.

Plastic/electronic transfer is the preferred method of payment in today's society.Now my questions:What if we charge our tenants other fees?

Before you cut, grab a $2 plastic drain clearing tool from any big box store.