Dimitri:

He found it nice that you are helping. Though seeing you walk past with arms full of items was quite a funny sight so he decided to walk over and ask if he can help you. You assured him you are good but he assured you back quickly that it would be his pleasure to help you. So you let him help, and good you did because he knew many around so he was quick to know who the things belonged to.

Dedue:

He watched you walk past with arms full of items so he walked over then took half the items, mainly the heavy stuff or stuff that was about to fall off the tower then stated he will help you. Both walked in silence, which he didn't mind as he always finds the silence with you comfortable, only speaking to ask if you know to who something belongs to or suggest who it could belong to.

Felix:

He just watched, wondering what you are doing and why you are so weird. When you approached him, asking if this item is his; he eyed it then said no before asking what you are doing. So you said returning lost items. He rolled his eyes, sighing there is so much better things to do and if someone loses something they should go find it, not you. You assured you don't mean doing it so he sighed then shrugged, mumbling waste your time however you want.

Sylvain:

He had a light hearted laugh about it as he approached you, asking if you might need help. You answered it would be appreciated so he hummed in thought then leaned to you. He whispered he will do it if he gets a kiss. At your eyes widening a bit he snickered, assuring he's joking then took the items from you. As you two walked around both had a nice, non-flirting chat. At the end, to thank him, you decided to give his cheek a kiss then leave. He stared at your walking away figure as his face slowly blew as red as his hair then covered his face, unable to believe you really did that.

Ashe:

He got worried when he came across you on your knees, moving grass around, with a pile of items aside you. So slowly he called your name then asked what you are doing. You finally got the item so held it up, saying getting lost stuff. He blinked then smiled, saying that's nice of you and he will keep an eye out for them. You thanked him so he nod, saying of course. So sometimes he will come to you, saying he found this thing that seems if might belong to someone.

Ingrid:

She watched, confused, then slowly asked with an awkward little chuckle if you are moving around classroom supplies. But you explained it's just items you found around so are gonna return. She thought that was a very nice act. She gladly rummaged through the stuff to tell you who it belongs to or she thinks it could belong to. She would have gone along but she was doing something so stayed. When she saw you walk past again she did ask how it went.

Mercedes:

She was praying when she noticed you picking something up, though that caused the other items in your arms to fall. She let out a soft gasp then quickly politely finished her prayers before hurrying to you. She crouched down then picked up the items, asking you quietly what you are doing. You whispered back searching and returning lost items. She let out an "ow" then assured you she will help you. So she did, even pointing out where she saw things that didn't seem as if they belonged there.

Annette:

She got excited; even letting out a gasp when she saw you then hurried over. She asked hopefully if she can help you. Half because this seems fun and half because she sees this as a chance to grow closer to you. So you let her help. As you both walked, she said who it could belong to, though with lots of "I think" so you don't blame her if it's the wrong person.