Making sure my collection room is clean is important to me as well since I suffer from asthma (yeah... and I smoke ). From one collector to another, having a display cabinet is invaluable. It keeps everything organised, well displayed, and relatively dust free.

Some cabinets are quite expensive but the investment is worth it in the long run. And dare I say it, if there ever comes a day when you stop collecting Transformers, the cabinets can be reused for something else.

I have a few items on display outside the cabinets, but these are mostly MISB / MOSC items that are protected in their plastic prisons anyway If I can be bothered, I sometimes wrap them in clear wrapping paper to avoid dust getting inside the box flaps etc. I know this is a bit extreme, but considering the money most of us fork out for our addiction, I don't mind taking the extra step.

Lastly, if you have a spare room that you can use for storing / displaying your collection, that also helps because there would only be one reason to go in there stirring up all the dust. If it's in a room that is heavily used, it becomes more difficult to keep that room clean.