I'm hosting an airsoft game with about 15 people on Monday actually. I use a CYMA CM042 AK-47, a total lemon of a Galaxy MP5K (for the past few months, every time I fixed something and fired a few shots something else broke - hopefully I get it fixed for good within the next couple days!), a couple springers (I believe it's a UHC Desert Eagle and a Double Eagle FAMAS), a slightly better springer (my infamous $5 "Swiss Arms" bolt action... opportunistic penny pinching ftw), and finally 2 Y&P Mk23 SOCOM NBB pistols (mainly because I wanted an extra magazine and for $10 more I got a complete new gun, but also to have the option for gun-fu).
Obviously I don't use all of those at once haha. More of my friends have gotten AEGs lately, but it's nice to have loaner guns.
Oh yeah, and it's funny that someone brought Nerf up, because just in the past few days we began discussing a large-scale Nerf war for the Church Youth Group I'm involved with (I won't tell if you won't). As far as those go, my only new gun is a Recon with the air restrictor removed, and I'm planning to add a powerstock to it and test an idea I have for making the barrel extension actually useful.
As for guns left over from when I was actually the proper age to play with these, I have a Nitefinder which I took the AR out of a few years ago, a little secret strike which shoots almost as far as those other two guns, and a knockoff 6-shot "revolver" (the kind with a bunch of barrels in the front of the gun), which I realized I could slam fire just yesterday.
Now I just need to take up paintball and I'll have more fake guns than sense (and money!)