There is a thread Favourite Speciality Tools under General Sewing, but since this may be more related to quilting than sewing, I thought I'd start a new one under General Quilting.
I now have a new "favourite" quilting tool...a seam brayer. What the heck's a seam brayer, you ask??? It's a wallpaper seam roller. There are a bunch of different varieties out there but this is a pic that resembles the I've got.
http://www.etsy.com/listing/110128149/vintage-wallpaper-seam-roller?ref=sr_gallery_2&ga_includes%5B0%5D=tags&ga_search_query=brayer+seam+roller&ga_search_type=all&ga_facet=brayer+seam+roller&ga_includes%5B%5D=tags&ga_view_type=gallery
The roller is used to press your seams...similar to using a wooden iron or finger press...but this does a super job and the seams don't stretch which can happen with a wooden iron. I learned about this at our guild meeting on Monday night. We had a guest speaker from the US, RaNae Merrill, who does spiral quilts. (http://www.ranaemerrillquilts.com/home) She said this is one of her favourite tools for making her quilts. She does a lot of paper piecing and this saves her time and big money on electricity (doesn't have to keep heating her iron). She says she only presses with the iron once her blocks are completely pieced.
I tried this today when I was piecing HSTs, piecing blocks and when sewing the borders on my quilt. It worked GREAT! I'm definitely going to be using this a lot!
There are some other models that have handles like paint rollers (handle comes from one side) like this one http://www.alibaba.com/product-gs/443533346/nylon_wood_wallpaper_seam_roller_ED001TM.html. I don't know if those would work as well. Maybe they would roll differently and cause some stretching when rolling the seams. (???)