I've not had much success with muffin trays. Calf just flings the balls and trays everywhere! I'll have to try it with Runt while Calf is asleep sometime! Bubbles are good though. They both love bubbles! Runt's not really at the stage where he can do much yet. He's just learning to crawl. It's really ineffective & looks like a crocodile but he can slowly propel himself forwards now! He even comes when I call, hold out my hands & wait 5 minutes for him to gracefully flollop the foot or so it takes for him to reach my hand!
Calf still doesn't come when I call! 
On a hot day, a bit of water in a tray can be good. Calf's recently discovered that DH sometimes leaves Runt's water within his reach so he'll 'helpfully' put it on his tray for him. This inevitably results in the open top beaker toppling & water flooding Runt's highchair tray. He loves splashing in it & grizzles at me when I clear it up! Or, if you're feeling brave & have plenty of wipeable surfaces, you could introduce gloop! I love it. Calf hates anything on his hands that doesn't spontaneously disappear when he starts flapping. I've not braved it with Runt yet but I'm really hoping he likes it so I have an excuse to play!
Or playdough, well supervised to avoid too much being eaten! You can add all sorts of things to home made playdough - spices, glitter, essential oils... It's a wonderful sensory experience for them!
Oh, Runt's favourite thing to do at the moment is to flollop over to one of Calf's toys which he shouldn't have & bash it against another of Calf's toys ditto to make as much noise as possible! Wooden spoon & saucepan lids?
Runt is ill & I'm getting his cold too. He's been miserable for 2 days forever! He's sleeping at lunchtime & then moaning all afternoon if I dare to extract myself from underneath him for even a millisecond. Calf's not helping either. He's spontaneously decided to go completely bonkers! He's literally bouncing off the walls. He's just learnt to spin to make himself dizzy & attempted to do it on the way into the dining room. He's not a fan of doorposts now! He just seems utterly out of control & we have no idea how to deal with it! He laughs when we say no, finds time-outs upsetting for the briefest of moments & then laughs at us until we get sufficiently frustrated with him to put him in his room with no toys. He jumps on the bed while shrieking & giggling.
Absolutely no idea how to deal with it, or the hitting which has just started too! Hopefully it's just a phase & if we're firm & consistent then he'll get the message... right?! 
Thanks for the support the other day. It means a lot to me to know I have you guys to run to!
