Go for it. If you can get the temps right, should work great. Those machines can be thousands upon thousands each and if maintained, some can hold temp to the .1 degree. Kind of looks like a plastics autoclave to me but lots of old lab stuff looks the same.
I wouldn't worry about bacteria and other junk that could be in there. Most common bacteria strains in labs are so line bred that they couldn't survive real life, much less being out of the ideal temps, humidity, and growth media for a few days.