I counted 8 on a hook by my back door, and each one is a little different from the others.  I probably have 3-4 others lying around the house, including some unique pouch designs I haven’t shared here yet
Oh! There’s also another sling on its way from Finland (thanks KTO!). I’ve learned something from each one and will probably keep making them faster than I give them away. For consistency, I use one sling more than the rest when I practice seriously, but I cycle through slinging with the others too.

All together I probably have upwards of 15 slings around the house. What about everyone else?  How many slings do you have? And how many do you actually use?

Three here at the house at the moment, more in storage. The ones I have here are a hardware store jute, a cotton split pouch and one of Mersa's specialties from dynema. I tend to give them away in trades usually so rarely build up a surplus.

3 functional ones, 5 that no longer work, and several unfinished procrastination ones.

I usually have one main one I carry in my pocket at all times...

I have about 4-5 in my cupboard that are my old favourites... as soon as I’ve inproved a technique or gotten better materials the newest one becomes my everyday sling and the old one goes in the cupboard or gets given away.

I’m yet to trade but am planning on putting one or two on here for trade soon.