Where did all these wireless devices come from?

My DSL modem recently died and had to be replaced.  When I got the replacement, I had to go around and reset my wireless devices. 

And was flabbergasted at how many devices I had accrued.

• the main PC 
• the printer
• a netbook
• a smart phone
• a Kindle Touch
• satellite dish receiver

I'm not an early adopter, but I do love not have cords running all over the place.