If you have space in the basement or somewhere free that is dry I would save a few of the nicer looking older models (remove the CMOS battery) for 5 years when 99% of those are recycled, they will have some value to collectors then. The funny thing with computer collecting is that nobody wants a specific model when there is a flood of the, but 5 or so years later there is a decent market for them after the large majority have been recycled.