Check out These Are My Stamps for an excellent way to catalogue your supplies, it is what I use to add my product lists at the end of my posts.
There are other ways to keep a track of what you have. One of my customers Ruth has a file and uses old catalogues to help her to inventory her supplies. She loves this as it also includes different ideas for using the stamps she has.
If she doesn’t have a catalogue with that stamp set in it she will simply do up her own page…
My Mum does the same thing, her pages are in alphabetical order of the Stamp Set. She loves it as she can flick through her book and easily find the right sentiment for her cards.
Both Ruth and Mum love to also add their punches, they simply punch each shape they own.
Another idea I have used is to punch out your shapes onto acetate and use a split ring to keep them all together. You will use the negative, but doing this your will know the space that you will have, you will be able to hold the negative over the top of your stamped image and you will be able to see how well it fits before committing to punching it out.
If you don’t have a printer than is able to print onto acetate you could always print them out onto card stock and then laminate them.