My son loved the original Thomas Trains, they were diecast in the beginning. Pretty much had the whole set and then I give them away as soon as he moved on to pokemon. Let's not get started there with the original pokemon cards, which we actually still have packed in the attic. Another thing I must get rid of when I move soon...ugh.
So far as macross collecting, my model habit got out of control years and years ago with the plastic kits. Not many I have not owned. Had to stop. I try to focus on Resin/Multimedia kits now as I just don't have the time to invest as I did when I was younger and the realization that I don't plan on stopping long enough to seize up from old age. Currently selling a few of my kits and toys, but having a hard time letting go of some things. Just can't bring myself to doing it. While I was going through my Macross toys and models I was putting it all on the bed that I was going to get rid of. As I was my my for sale post earlier I was putting some of them back in my stash thinking "I need this so when I finish that"...I know I am going to have to let them go at some point, model kits wise. The toys though, they are pre-made so I don't have to invest the same amount of time.
Don't know if any of that makes sense, but ugh...the addiction. So far as collecting anything else, I don't collect anything else for personal satisfaction other than Macross.