They can be perverse creatures-I used to offer my cats the toys I bought, but after seeing the behavior you refer to, now I just nonchalantly toss the new toys someplace where they can be easily seen-mine are especially fond of those little fur mice-there are at least 15 of the things on the floor and on furniture where they have been carried...
I’m definitely going to invest in one of those heated beds when I have a few bucks available...
If I was you I would jump right now on this Amazon price.
Right now it is $21.65
http://www.amazon.com/Thermo-Kitty-Mat-12-5-25-Mocha/dp/B000S9M2U4