grab bag
1. A bag or other container filled with various things, usually free gifts or promotional items. Primarily heard in US, Australia. For their grand opening event, the new cosmetics store gave customers a grab bag filled with coupons and free samples of their products.
2. By extension, anything that represents a variety of differing or unrelated items. My resume has a real grab bag of experience on it. I hope they can see how it applies to the position I applied for.
grab bag
A miscellaneous collection, as in The meeting amounted to a grab bag of petty complaints. This term alludes to a container offered at a party or fair, where one dips in for a party favor or prize without knowing what one will get. [Mid-1800s]