Magnetic Sculpture Desk Toy for Intelligence Development and Stress Relief, Stress Reducer Great for Relieves ADHD Anxiety,Gift for Children and Christmas (Set of 171 Balls, 1 Magnet Base)

What I should have done to start with! Being an engineer and a sometimes DIY guy I found a NASA site with plans to build a bottle rocket launcher and a bottle rocket. While I may have enjoyed the building process, the grandsons were mostly interested in the fun of the launch. I spent ~$100 on parts for the homemade outfit and while it worked it was complicated and to use subject to "failures" like premature launches. This kit makes all of that past history. It's reliable and very easy. The fins make creating a "rocket" from any pop bottle in a minute super easy. First time out we did ~20 launches from 20 to 60 psi in a school yard and it was great fun. While it does not do as much to "teach" about the physics and DIY does, it is captivating for children and adults.

Far exceeded my expectations! This launcher works extremely well right out of the box. It looks like someone made it in their garage using parts bought at Home Depot, which actually makes me love it more. Very simple and clever.2 Suggested improvements: - As another person mentioned, adding a single layer of duct tape on the inside of the locking ring greatly reduces the chances of an accidental, premature launch. The ring does stay in place without the tape, but it has a hair trigger, so the slightest tug on the string sends the rocket off. - The design cleverly allows the whole base to be tilted (Slightly inverts the launch tube) for reloading without spilling any water. This is done by putting 2 stakes in the holes drilled in the base on the valve end. However, the tilt angle is limited by the valve stem, which gets squished into the ground and filled with dirt/mud. So, I drilled 2 more holes in the base on the other end and use that side for the stakes. By tilting it the other way, I don't even have to remove the pump connection between launches. Very slick.

Great launcher. Designed properly and built to hold up under heavy use. Got this launcher for my grandson so he could launch the small .5 liter water bottles in his back yard. The launcher came all set up for use with 2 liter bottles and StratoFins. Took only a minute to read the great illustrated instructions and adjust it for the smaller bottles with the tool that was included. First attempt was a successful launch - with the small thinner bottles you have to be very careful not to over pressurize. It only takes 4 or 5 quick strokes on a cheap foot pump to do the job. Quick, easy and works every time. The base is heavy enough that it didn't need to be staked down when using the smaller bottles. The two stake set up works great for the larger bottles because it allows you to tilt the launcher for loading without having to remove the stakes every time. This launcher is everything they say it is and more. Try it - you will like it.After playing with this launcher for a week, there are two other features I'd like to point out. First, the launcher is compact. It's big enough to do the job, but everything folds up and fits into the 3" x 8-1/2" x 11" box, which makes it easy to carry to the park. There's plenty of room in the box for the stakes and a couple sets of StratoFins too.The other nice feature is that the launch tube can be easily tilted to allow for wind problems or to allow the bottles to be launched for distance rather than height. Most of the other launchers on the market only shoot straight up. It's easy to see that a lot of thought was put into its design and construction.

I'm not going to do a really long review on this product. It's a type of bag and I can't think of much to say about it except that the design and quality of the bag are far better than I had expected.The bag is large enough to hold several 3 cell R/C lithium polymer helicopter batteries. The main thing I noticed about the bag is that it appears to be made of an extremely sturdy material and the Velcro on the bag is extremely sturdy too. The inside of the bag looks very well made too. I'm surprised that this bag doesn't cost more. I'm going to order another one.

these things are pretty nice. study it before you try it as the base/launch tube attaches to the bottle in an unexpected way that is a bit unsettling. don't get me wrong cause it works, just be careful cause it has a hair trigger with a 16oz bottle. haven't tried a 2 liter yet.it will fire a bottle a 100 feet in the air easily and I can't tell you what pressure was applied, didn't pay attention, but they do go up there.it's fun, it's nice.......so much so that I went back and bought another set of bottle fins and a parachute.........and I have plans to get my grandson to help me paint the rockets/bottles.

I was absolutely surprised by the quality of this product given its price compared to other lipo bags. I have been charging Lipo batteries without a bag for over 2 years now without a second thought, but I have always been careful where and how I charged them. Anyhow, a house recently burned down in our neighborhood and they have linked it back to a Lipo battery. Now, I have no idea how this guy/kid was charging/storing his batteries and what shape they were in, but if this bag can add a layer of insurance for a few bucks, why not.The bag - it is well made and it is large. I store three lipo batteries in it and it could easily hold another. If you are messing with lipo batteries, it is a must buy as far as I am concerned.

My baby girl will be wearing this for Halloween. We tested it out the other day and it fit well. Better quality that what I was expecting. The only thing I didn't like was the headband. The bow was a separate clip from headband. Had concerns it would scratch my baby's head so I removed the metal hair clip from the bow and then used a glue gun to stick bow directly into the headband.