Both those stars are in “Origami for beginners” by Vicente Palacios, ISBN 0486402843, and were designed by Francisco J. Caboblanco (pages 25 and 31). I love Palacios’ books and buyed all of them (second-hand), but they’re probably not good for beginners – very good for intermediary level, though.
The left star is made of 8 sheets of 7 cm Grimmhobby Senbazuru Chiyogami. The right star is made of 8 sheets of 7.5 cm washi Chiyogami.
The back of the stars is different, and nice too.
The two top stars are variations from a star by H. Azuma, in the book “Spiral origami” by Tomoko Fusè page 22, ISBN 8976221249 (korean? the editor seems to be Jong le Nara).
Searched all my books without success, so I’ve got no idea where I found the bottom star (references welcome).
Each star is made of one sheet of paper. The top left is made from 15 cm stars paper from ebay, the top right is 20 cm Folia Basics yellow, the bottom is 15 cm kami.
I showed this model before, but as I said, it’s one of my favorites – so here are a few more.
On the left, the blue box is made from square chiyogami, 15cm. On the right, it’s square 20cm halloween paper by Avenue Mandarine (“Boo!”), same pattern on box and lid but smaller print on the lid.
The middle orange-gold box is 17X20cm paper for ancestors cult. I found it in the Asian shop where I buy ramen and green powder tea, couldn’t resist trying new paper – the colors fade fast, but it was really cheap, so it’s still good to make ephemeral gorgeous things :)
The red and silver box is made from 15cm double-sided paper by Daiso. It’s quite thick and I like the texture on the metallic side, makes a sturdy box. The yellow box on the right is 15cm print chiyogami, I think also from Daiso.
This one is made from 28X21.5cm maps of Québec. Maps are great papers for origami, they always look very classy I think :)
Details of the flower on the lid.
I can’t find where I folded the model from, but I really like it. It’s very simple, but the form is right, it stays closed because the front heart locks into the far one on the top. You can open it and write your message inside, or use smaller paper and spread them around your loved ones.
These are folded from 30 cm scrapbooking paper, “mosaic memories” by Recollections.
Once again, this box is by Tomoko Fusè. It can be found in a japanese book, ISBN 4480872035, page 8.
It is folded from one sheet of A4 double-sided cardstock (150g/m²) by Maildor.
Nested inside are two masu boxes in 15cm flowery paper from Kyowa, and I just layed sheets of 5 cm crane folding paper from Jong Ie Nara on the masu’s bottom. It’s a bit much, but the colors fit perfectly together – it’s a precious little treasures box :)
I love this bat. The model is by Anna Kastlunger, and the diagram can be downloaded.
I love that it is simple-looking, yet very recognizable.
It is folded from 35cm double-sided kami. 
I was at a science-fiction convention last week-end, and distributed a huge bag of origami – people called me the origami faerie, it made me very happy to see the paper joy spead! The person who took this one seemed to have fallen in love with the model :)
These gorgeous boxes can be found in a japanese book, ISBN 9784416307069, page 66 and further. They’re all the same base model, only the decoration part changes.
As you can see, I really like this model, and folded a huge serie of them. On the left, folded from japanese washi chiyogami (this one) (two 15 cm sheets on the bottom + a matching 7.5 cm for the decoration) and one sheet of gold foil paper 15 cm for the lid. On the right, yellow Tant paper (2 sheets on bottom + 1 under the crane) and another japanese washi chiyogami, one sheet 15 cm for the lid and another for the crane (not sure about the size).
Here you can see I played nesting boxes with different decorations. People loved opening them and discovering the next! The crane with wide tail is on page 63.
The paper is from a nuinui pack, 20, 18 and 15 cm (double-sided, the cream color is the other side). It’s great to have the same pattern in different sizes, for the nesting :)
The left box is double-sided chiyogami 15 cm from toyo (a pack of 30 patterns, 120 sheets). I love the little leaves.
The paper for the box on the right comes from a nuinui pack again. It’s not so clear on the picture, but the decoration is actually a handle on this one.
Jo Nakashima made a video tutorial for this adorable Totoro by Robin Glynn. My brother and his girlfriend like Totoro a lot, so I made one for them… and then her sister asked for it when she visited, so I had to make them another one – let’s say, if you have Miyazaki enthousiasts around you, you can fold this model a few times :) It’s not excessively complicated, but looks really good.
Totoro is folded from one sheet of 25cm grey kami ; The leaf, as said before, is one square sheet of 20cm paper. Jeremy Shafer made a video tutorial.
Here you see the back of the leaf.
This cute box is by Ilan Garibi. He also has a lot of other models on his website and his youtube channel.
It is folded from one sheet 20cm double-sided paper by “Die Sachenmacher”.
He published a video tutorial. It’s easy to fold, and really cute. I guess it should be folded from stronger paper, because mine doesn’t stay closed so well.
This modular origami by Tomoko Fusè can be found in “Origami modulaires d’exception” (nuinui, ISBN 9782889355815, page 106).
It is folded from 6 sheets of 15cm kraft paper from Daiso. I like the double-sided effect, but it’s pretty with one-sided paper too.
3 modules are folded and assembled, then 3 more are made in mirror direction, then all are put together. You can also make a pyramid using only 3 modules.
The small one is made with 7.5 cm paper “Dot mini origami – star” by Showa Grimm.