でもお好きなものを

anything you like

→ で
phrase Rare #41,726
anything you like Usually follows a word like 何 or どれ; お好きなもの is a polite way to say “something you like,” and を marks it as the object of the next verb.
JA: 何でもお好きなものを選んでください。
EN: Please choose anything you like.

なんでもお好きなものをご自由にとって食べてください。

Please feel free to take and eat whatever you like.

どれでもお好きなものを、ご自由にお召し上がりください。

Please help yourself to whichever you like.