Where Could I get Instruments?

Hi I'm just wondering where I could find secondhand instruments? Even just for a loan?

I'm visually impaired and it's been a dream of mine to get the oppurtunity to mess around with some music instruments and gadgets.

I'd be looking for maybe a theremin, a trumpet, harp, a saxophone, a flute etc. Also any keyboards from the 2000s and before.

I know it's silly but it would be really cool to feel them and learn what's where and how they're played.

Thanks :)