I like the look of that treat pocket, the boys would love that! The toys you linked to are from the US petstages site though, the US seem to have different toys to those available in the UK so I don't think the goldfish bowl is available in the UK, at least I couldn't find a UK seller when I googled it. Have found a UK seller of the treat pocket so will be treating Lucas and Riley to one
The fish bowl looks OK though if you can find it, I have a similar 'roundabout' toy which they have had since tiny kittens and it's still a popular toy today. I think the roundabout looks more fun as they can poke their paws in holes at the top and also in the gap at the side to get the ball. It also has a mouse on elastic stretched accross the middle hole, poor mousey seems to have developed a skin condition and now has no fur left where the boys nibble at him with their teeth
For interactive toys you really can't beat 'da bird' and 'da mouse', the only thing I'd say is make sure you hide it between play sessions as they WILL hunt it down! I have probably spoilt my two and they have virtually every cat toy known to man, I've imported quite a few toys from the US as they look so much more fun than the toys that we can get over here. Out of all the toys they have ever had 'da bird' and 'da mouse' win paws down as the absolute favourite, they never get bored of playing with it. It's from the US but is available from the Purrs shop, you need to buy the da bird including the pole and then you can get separate attachments such as da mouse, da furry, da sparkly, da puff or the original da bird feathers for when they are eventually destroyed