Here are a few thumbhash examples that you can pass to the prop:
```
lang=js
// these are raw, non-encrypted thumbhash strings
const thumbhashes = [
'1EgOHYQImHiZZ4iCe3eWeAinolA8',
'5xcSHQZpeI94KIenaHhoh2ufo/Y4',
'EQgKHQZlh2122Hb4dm2Gh2hwkQc3',
'GTSBBIAmOIlphnApR+P7ijmPhYUIR4h3Bg',
'JRkaPQh4d394V4doeHd3h3iAgAcI',
'TwgOFQKniXV1+JeYh3u2mLZ1b1v3',
'YGkKHQKnh392CGdXpXVoeptu0IgF',
'E9cJVRB6h493R3iIeHmXZ3hwhAg3',
];
const thumbhash = thumbhashes[Math.random() % thumbhashes.length];
const placeholder = { thumbhash };
````