I chose the pygmy puffs, because they're cute and easy to handle, I guess easier than puffkeins (and less disgusting -- I wouldn't like if they stick their tongues inside my nostrils). But I also fancy the fireworks ... how are they called? Wild -don't-remember-what.
The decoy detonators are useful if you're in a hurry, but I'm not usually in any, and the
extendable ears are great too if you like eavesdropping, which I'm not fond of either. I wouldn't use skiving snackboxes because I don't like skipping lessons; and love potions aren't romantic. Daydream charms would be useless for me since I have my own daydreams ( ).

Extendable Ears!!! I'd love to eavesdrop on everyone
Other than that... A love potion... I'd spill afew drops into every boy's drink

Extendable ears would be my choice.

Extendable Ears would be verrrrry useful I would buy most of the stuff they sold but I would need to see someone test everything with me watching and not being used to test the stuff.

Good question here's how I would rank them:

1. Instant Darkness Powder
2. Decoy Detonators
3. Skiving snackboxes
4. Love potion
5. Extendable ears
6. Portable swamp
7. Fireworks
8. Shield Hats
9. Daydream charms
10. Pygmy Puffs

Hooray!

I voted fireworks, as they are just gorgeous. But it would be great to have a daydream charm! The peruvian instant darkness powder would be great as well. So many wonderful choices

I chose the instant darkness powder, as I am not one for jokes. I enjoy things that are useful yet beautiful and awesome. I would love to just be able to throw some powder in the air and be able to run away from whatever it was that was troubbleing me.