If you go to the Altrincham ice rink there is a nice bowling alley nearby - Atlantic Bowl. It's our favourite out of the local bowling alley choices.
Dino Falls adventure golf is outside near the Trafford centre - my teens think it's better than the Paradise Island one inside.
Depot Climbing Manchester is a large indoor bouldering centre in Trafford Park (near the Trafford centre) - can hire climbing shoes to use and if the kitchen is open the pizzas and fries are excellent. If you go there, do the online waivers in advance to save time.
If they're into Ninja activity centres there's a Total Ninja in Trafford Park and a Ninja Warrior UK place in Wigan.
There's kayak hire at Debdale Outdoor Centre and Trafford Water Park, kayaks also available through a company called Venture Out who run self guided trips down the River Mersey. We've done the Venture Out kayaking and enjoyed it