Hello, I have a 4 month old linnie. Everyone says they’re playful but how exactly should I play with him? He has a big cage with ladders, rope bridges and dangling bells but what games can I play when he’s out and about? I heard they like burrowing under blankets... do you recommend I get him a small blanket to burrow under? Of course I’ll take care not to sit on him or let him get short of air under the blanket. He seems to love being scratched under the chin and climbing up and down my arm from my hand to my shoulder. Any recommendations for fun activities?