How long have you been telling us you need to get shelf things? It's been so long, Ikea have planted a new forest to grow more wood to make shelf things so that you can think about buying some!
But, old chap, before you eventually go and buy some, measure the wing span and length of the biggest, and also the average models you want to put on the shelves - even more important if you go for glass cabinets, which are better, and not much more to buy - and then check the internal size of the shelves or cabinets you're thinking of getting (both width and depth.).
Some shelves/cabinets look great, but you might only be able to fit, for example, three, or maybe only two models on each shelf, or, if in a cabinet, you might find that the span won't allow the model to fit, at any angle, with the doors closed. It's surprising how many shelves/cabinets are just that wee bit too small, internally, being designed for such things as vases, ornaments and other daft 'girly' stuff. For example, two of my cabinets measure 36 inches wide, externally, but are only 30 inches wide internally, due to the design. Fortunately, they're deep enough, and I can also add some glass shelves between the fixed wooden shelves, as there's quite a height between shelves, due to them being designed as glass-doored bookcases.