I was recently attending a PD seminar and this idea popped into my head, also known as "daydreaming". Just finished my Fusion 360 model and thought I'd share it for feedback. :-)

Step 1: 3D Print Prototype

I'm ready to Print my prototype and want to get suggestions or issues people think I might have.

Step 2: Some Facts About Spacers

Using a spacer with a puffer makes it easier to take the medicine, and also gets more of the medicine into the lungs so it works better. Generally, using a spacer with a puffer is much better than using a puffer alone.

All children should use a spacer to take their medicine, for both reliever and preventer puffers.
Adults and adolescents are recommended to always use a spacer with their preventer puffer, though they can use their reliever puffer with or without a spacer.
A spacer is a plastic container with a mouthpiece (or mask for very young children) at one end and a hole for the inhaler at the other. The medicine is ‘fired’ from the puffer into the spacer and is then inhaled.

Note: Spacers can only be used with puffers

Did you know? Using a spacer with your reliever medicine in an asthma flare-up is as effective as or even better than using a nebuliser; and it’s faster and easier. You’ll probably have fewer side effects too.

https://www.asthmaaustralia.org.au/qld/about-asthma/manage-your-asthma/spacers

Step 3: Why Don't Puffers Come With a Spacer????

Why use a spacer?

Clinical studies have shown that by adding a spacer to a pressurised metered dose inhaler, drug delivery to the lungs can be improved by 40% to 60% 1 For this reason you should always a spacer in conjunction with your puffer for both your daily preventer medication and when using your reliever in an emergency.

Using a spacer means:

more medication is delivered to your lungs making it more effective
reduced side effects from inhaled steroids in prevented medications because less medication is deposited in your mouth and throat
dosing is easier as you don’t need to coordinate pressing your puffer and breathing in at the same time

http://www.medicaldev.com/asthma-copd/using-asthma-spacers/