When I get rid of one that still has life in it, I give it away on Craigslist).There are plenty of inexpensive, very well-reviewed mattresses that are available - just do a little searching, you'll find them for ~$300-400.  

I always supply a box of a dozen filters when a tenant moves in. 

Zero coupons are 1031 compatible products that do not pay monthly income but are assumption of debt for a value add project that let's the 1031 investor park debt in exchange for a payout later rather than mail box money today. 

Use the search bar and check the Colorado specific forums.

I've tried to find this answer on BP and through searching Google, but have not been able to get the specific question answered.

Going off that train of thought I could also use the county auditor site and do the same search.

Dan Henderson This has been brought up couple of times, learn to use the search bar.

Trying doing the keyword search on BP. https://www.getrefm.com/ - has some great software and spreadsheets.

I am actually in the process of searching for one, so that sound great.

You can leave the gas in place but if it were me I would add the wire while you have the box opened up just don't put the breaker in.