Mini Video Game Museum

I have had a lifelong passion for video games and while I no longer have the time to play as often as I would like (that pesky life thing getting in the way!), I still play when I can and follow this community avidly. I have been slowly collecting old video game consoles and games for several years and now find myself in the position to display these items in a mini museum in my home. I have purchased a large glass display cabinet from an on-line auction website to do this, but discovered it didn't come with any shelving. I have looked at getting shelving made, but it is a little more expensive than I can afford. $500 would allow me to purchase 3 Perspex shelves, any extra money would let me upgrade this to glass. I understand a lot of you reading this are probably thinking first world problem! But I believe that all culture and entertainment is worth protecting and this would allow me to contribute to this preservation.