Sorry, saw your post but was busy and forgot to reply until now
Aw that's a shame. I know there are some websites which stock American things in the UK but shipping is always a ton.
Yeah I guess kool aid is kinda similar to squash, it comes as a powder though.
There are so many incredible things you can get in the US but not in the UK.
I particularly like:
loads of flavors of pop tarts
Reese's peanut butter cereal
Apple jacks cereal
Banana split / double stuffed oreos
Huge seedless watermelons
loads of flavors of Jello (jelly)
Welch's grape jelly (jam)
Root beer
Vanilla dr pepper
Grape Fanta
Snapple/Arizona iced tea
Peanut butter M&Ms
Sour patch kids (unlike the UK ones, the US ones are actually sour)
Wild berry / sour skittles (ditto sour patch kids)
Willy Wonka nerds
A place near me that has like 20 different syrups for coffee (watermelon coffee is pretty amazing!)
Lots of restaurants/fast food places do free soda refills.
Hmm, there's loads of stuff I missed out, that's just what comes to mind.
Oh I just remembered one thing from the UK that I really miss: banana milkshake in McDonald's!
They have vanilla here instead.