buford 1000% had an idog and thought it was the cutest thing ever and showed it off to everyone (and phineas and ferb then proceeded to build a life sized one that was with actual dog ai)
phineas and ferb probably spent most nights secretly talking on pictochat when they were supposed to be asleep
the gang defo had many days meeting up to play mario kart ds tournaments. there were probably many occasions where they noticed another character had joined their race and found irving hiding behind the couch
and isabella and phineas had a LOAD of stickers on their ds' and isabllea probably had so of charms on hers you could hear her from a mile away. baljeet had a VERY sturdy cover that was probably space adventure themed and buford was that kid with a busted, inexplicably sticky ds with smudged screens that no one wants to touch. ferbs was purple and everyone thought it was easily the coolest
the flynn-fletchers probably spent many nights playing wii sports bowling and phineas and ferb have high scores in most of the sports but candace is competitive so shes very close behind and dedicates her time to beating them and lawrence is the best wii golfer in history and probably enterered tournaments but is very casual about it meanwhile linda is terrible at everything but still finds it fun. also yes of course the grandparents also play and yes so does perry when no ones around, he just uses ferbs account which already has max stats on all games so as not to arouse suspicion
candace was the only one with an mp3 player and phineas and ferb rlly wanted one and always nicked it to play their music so she started guarding it with her life
everyone except baljeet plays club penguin (baljeet doesnt understand the appeal) and everyone but buford managed to needle their parents into getting a membership. isabella and phineas adopt every puffle they can get their hands on. isabella has a red one named phineas
