Here's a fun survey to see how many devices everyone has on their home wifi. I was shocked when I saw how many I had on mine:

1 x Router, obviously
2 x Desktop PCs
1 x printer
1 x laptop
1 x Ipad
1 x Iphone5
1 HTC-M7
3 x HTC-M8s
1 x Panasonic TV

Total: 12
No. in household: 3

Fire away...