I know what you mean. Toyworld has that kind of thing on sale and I think dh's mum gave us an actual baby/toddler seat thingo with a belt on it but again we don't have anywhere to hang it so it's been in the garage ever since! But if we purchased a regular swing set we could just hang the swing on that where the roman rings / trapeze part is. Mind you I think a swing set like that may be too big for our yard... I will have to go out and measure the area tomorrow. hmmm I think the cage swing seat thingo would be ok for DS even at this age, we could kinda hold him in the seat while we swing him