If you wear any other lingerie (besides bra/underwear), I’d recommend not wearing it the whole day. They can be really hard to move in and uncomfortable for the whole day. If you wear a nice bra/underwear then wearing the whole day is a good idea!
For toys, you could use handcuffs/blindfold, ropes, ice/food (not a toy I guess lol). You can set the mood with dim lighting if possible and scented candles. Just some ideas! You could combine things in an exciting order (ie. blindfold, then handcuffs, then ice). It depends if he/you are into that though! And remember to get consent of course