Without doing any special configuration on your network you get 253 addresses (192.168.xxx.1 to .254) to play with.
On my network every address from 192.168.1.1 to 192.168.1.40 is reserved for fixed IP addresses for Raspberries (I've, currently, got fourteen). Every address from 192.168.1.41 to 192.168.1.100 is the DHCP pool for phones, laptops, tablets, smart TVs, my Arduino, esp8266s and a couple of Wemoses. Addresses above .230 are also reserved for fixed IPs. My NAS is at 192.168.1.230. My printer is at 192.168.1.249. My old WiFi AP is 192.168.1.250. The router is 192.168.1.254. There's a big gap from .101 to .229 that's free for future use.
Most I've ever seen is 31 devices connected (I let visitors connect, I don't restrict anything except dailymail.co.uk is DNS poisoned).
Microprocessor, Raspberry Pi & Arduino Hacker
Mainframe database troubleshooter
Since 2012: 1B*5, 2B*2, B+, A+, Zero*2, 3B*3
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