The best toys are the ones that have to be supervised the most. My toddler grandsons love the Elefun we bought them. Read the reviews. We cut off the top 18 inches of the tube, and solved the problems most people are complaining about. They are hard to catch in the net, so we play pick up a lot.
The actual interest only lasts about an hour, unless you let them pick up the toy and aim the butterflies, then you get another 20 minutes or so. Put the game away after each use and only let them see it once or twice a week.
For continuous, daily play, I have discovered the car play mat works best. I have one that looks like a blanket, for standing and playing on the bed, and the rug style for sitting down in the yard or at a picnic.
We also have a very popular picnic table that can be used any time for anything. Throw a blanket over it and it becomes a tent or playhouse, or combine with a slide and it becomes a climbing, sliding toy.
We buy all of our major toddler toys at Once Upon A Time, a second hand childrens shop which sells only top quality toys for heavy discounts, some used and some brand new, out of date, such as last year’s version.