R.P.
Hi there!
We've had success with the following.
Theme days (Princess Day, Sports Day, PJ Day).
Play tent (make a blanket tent and play house or dollies or nap time).
Crafts- Michael's almost always has some craft kits on clearance for less than $1 each. We've picked up paint by number kits, balsa wood animals to color/paint, misc bows/ribbons to make cards, stamps, plastic stained "glass" kits....).
Make paper towel tube telescopes & run around the house playing pirate.
Make toilet paper kaleidoscopes (simplest version is to get two pieces of Saran Wrap, put beads/etc... on one piece, put other piece on top, twist the sides, rubberband around the end of tube).
Make paper plate "cards". Cut small slits all around the edge of the plate, run a ribbon over/under through the slits and tie off. Let kiddo decorate with stickers, stamps...
For the learning workbooks- Hooked on Phonics has some of the best. You can even find some of them at local dollar stores (we found Numbers, Shapes, Colors, Letters,and Math). It helps too if you put on some really spunky music and dance around while learning.
Hope this helps. :-)