To shorten the crotch length of your slacks, assuming no lining, turn the pants inside out, in-seams flat and together. Start between the knee and crotch, sew along the original seam but stitch beyond the existing crotch to the desired depth, maintaining the curve in the pattern and repeat on the other leg. Be careful as this method can sometimes create a 'pleat'. If you undid the seams, you should be OK. Hope this works for you. It does for me.

Get a peg board! I have one, together with the metal brackets. It holds serger thread, regular thread, larger spools of embroidery thread, home made patterns, notes, scissors (out of harm's way), rotary cutters and anything you wish to hang. The list is endless.
It's on the wall, so takes up no floor space, it can be as big or small as you wish and can be hanged wherever you wish, even on the 'dead' space behind the door!
The best part is it is relatively in-expensive. It looks good too, most professional and organised. No more clutter means more time to sew!